Important Rotational And Circular Motion Quiz Test Online

Rotational And Circular Motion Quiz Test Online

Circular Motion Test. 1

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1) Weightlessness experienced by an astronaut in orbit is due to:

The high speed of the spacecraft

Zero gravity at that altitude

The spacecraft shielding from gravity

The astronaut and spacecraft being in constant free-fall

Both the astronaut and the station are continuously falling towards Earth but have enough tangential velocity to miss it, creating the sensation of weightlessness.

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2) The rotational kinetic energy of a body is given by:

(1/2)Iω²

(1/2)mv²

(1/2)I²ω

Iω

This is the rotational analogue of the linear kinetic energy formula, with mass replaced by moment of inertia (I) and velocity by angular velocity (ω).

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3) For a car on a banked curve (angle θ), the centripetal force is provided by:

The car's weight

The vertical component of the normal force

The force of friction only

The horizontal component of the normal force

When the road is banked, the normal force has a horizontal component pointing towards the center of the curve, providing the centripetal force.

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4) The relationship between linear velocity (v) and angular velocity (ω) is:

v = r/ω

v = ω/r

v = rω

v = r²ω

This shows that for a given angular velocity, the linear (tangential) velocity is greater at a larger radius.

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5) Moment of inertia depends on the mass of the body and the:

Applied torque

Linear velocity

Distribution of mass about the axis

Angular velocity

The farther the mass is from the axis of rotation, the greater the moment of inertia (I = Σmᵢrᵢ²).

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6) The direction of angular velocity is determined by the:

Right-hand rule

Law of gravitation

Newton's second law

Left-hand rule

Curl the fingers of your right hand in the direction of rotation; your thumb points in the direction of the angular velocity vector.

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7) Torque is defined as the cross product of:

Force and position vector

Mass and angular acceleration

Force and velocity

Position vector and force

Specifically, τ = r × F. The order is important in a cross product.

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8) If no external torque acts on a system, which quantity is conserved?

Kinetic energy

Angular velocity

Angular momentum

Moment of inertia

This is the law of conservation of angular momentum, the rotational analogue to the conservation of linear momentum.

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9) The force required to keep an object moving in a circle is called:

Gravitational force

Frictional force

Centripetal force

Centrifugal force

This is the net force, directed towards the center, that is required to cause circular motion.

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10) Centripetal acceleration is always directed:

Tangent to the circular path

In the direction of velocity

Away from the center

Towards the center

This acceleration is responsible for continuously changing the direction of the velocity vector to keep the object on a circular path.

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11) A geostationary satellite orbits the Earth. What is its angular velocity?

Equal to the Earth's angular velocity

Greater than the Earth's angular velocity

Equal to the Sun's angular velocity

Zero

To appear stationary from the ground, it must complete one orbit in the same time the Earth completes one rotation.

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12) The rotational analogue of mass is:

Torque

Angular velocity

Moment of inertia

Angular momentum

Moment of inertia (I) measures an object's resistance to changes in its rotational motion, just as mass measures resistance to changes in linear motion.

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13) For a rigid body rotating with constant angular velocity, its angular acceleration is:

Constant but non-zero

Zero

Maximum

Variable

Acceleration is the rate of change of velocity. If angular velocity is constant, its rate of change is zero.

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14) Which has a larger moment of inertia: a solid sphere or a hollow sphere of the same mass and radius?

Depends on the angular velocity

Solid sphere

They have the same moment of inertia

Hollow sphere

Since all the mass of the hollow sphere is at the maximum radius, its moment of inertia (I = 2/3 MR²) is greater than the solid sphere's (I = 2/5 MR²).

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15) How many radians are in 180 degrees?

2π

π/2

π/4

A full circle is 2π radians (360°), so half a circle (180°) is π radians.

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16) The time period of a geostationary satellite is:

1 hour

365 days

24 hours

30 days

This is the time it takes for the Earth to complete one rotation on its axis, so the satellite's period must match.

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17) The dimensions of angular momentum are:

[MT⁻²]

[MLT⁻¹]

[ML²T⁻¹]

[ML²T⁻²]

Angular momentum (L = r × p) has dimensions of radius [L] times linear momentum [MLT⁻¹], resulting in [ML²T⁻¹].

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18) What is the SI unit of angular displacement?

Degree

Revolution

Radian

Meter

Radian is the standard international (SI) unit for measuring angles in physics.

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19) Orbital velocity of a satellite close to the Earth is approximately:

7.9 km/s

11.2 km/s

9.8 m/s

3.0 × 10⁸ m/s

This is the critical velocity needed to maintain a low Earth orbit, balancing gravity's pull.

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20) Artificial gravity in a space station can be created by:

Increasing the station's mass

Moving at high speed

Decreasing the air pressure

Rotating the station

Rotation creates a centripetal force on occupants, which they perceive as a 'gravity-like' force pushing them towards the outer wall.

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Circular Motion Test. 2

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1) The reaction force to the centripetal force is:

The centrifugal force

A force on the agent providing the centripetal force

The gravitational force

There is no reaction force

By Newton's 3rd law, if A exerts a centripetal force on B, then B exerts an equal and opposite force back on A.

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2) A car moves at 10 m/s on a circular track of radius 50 m. What is its centripetal acceleration?

5 m/s²

500 m/s²

2 m/s²

0.2 m/s²

Using the formula a_c = v²/r, we get (10 m/s)² / 50 m = 100 / 50 = 2 m/s².

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3) In the SI system, the unit of torque is:

Joule (J)

Newton-meter (N·m)

Pascal (Pa)

Watt (W)

Torque is force times the lever arm distance, so its unit is the product of the unit of force (Newton) and distance (meter).

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4) What is the angular speed of the minute hand of a clock in rad/s?

π/60

π/3600

π/1800

2π

The minute hand completes one revolution (2π rad) in 60 minutes (3600 s). So, ω = 2π/3600 = π/1800 rad/s.

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5) What is the work done by the centripetal force in uniform circular motion?

Depends on the radius

Negative

Zero

Positive

The centripetal force is always perpendicular to the displacement. Since work is Fdcosθ and θ = 90°, the work done is zero.

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6) An object moves from (2, 3) to (4, 5). The angular displacement about the origin is:

Zero

Negative (clockwise)

Undefined

Positive (counter-clockwise)

The initial angle is arctan(3/2) ≈ 56.3°. The final angle is arctan(5/4) ≈ 51.3°. The angle decreased, so the displacement is clockwise.

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7) The expression for centripetal acceleration (a_c) in terms of ω and r is:

a_c = ω/r

a_c = ωr²

a_c = ω²/r

a_c = ω²r

This is derived from a_c = v²/r by substituting v = rω, which gives a_c = (rω)²/r = ω²r.

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8) Which of the following physical quantities is a pseudovector (axial vector)?

Torque

Linear displacement

Linear velocity

Force

Torque is defined by a cross product, and its direction is determined by the right-hand rule, which is a convention.

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9) A dancer spinning on ice pulls her arms in. Her angular speed:

Increases

Becomes zero

Decreases

Remains the same

By pulling her arms in, she decreases her moment of inertia (I). Since angular momentum (L=Iω) is conserved, her angular speed (ω) must increase.

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10) A disc is rotating with angular velocity ω. If a child sits on it, what is conserved?

Kinetic energy

Linear momentum

Potential energy

Angular momentum

Since sitting on the disc is an internal process for the child-disc system with no external torque, total angular momentum is conserved.

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11) A solid cylinder and a hollow cylinder (same mass/radius) roll down an incline. Which reaches the bottom first?

Depends on the incline angle

The hollow cylinder

They reach at the same time

The solid cylinder

The solid cylinder has a smaller moment of inertia, so more potential energy is converted into translational (linear) KE, making it faster.

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12) The angular momentum of a rigid body is the product of its moment of inertia and:

Angular velocity

Angular acceleration

Time period

Linear velocity

The formula L = Iω is the rotational analogue of linear momentum p = mv.

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13) The equations of rotational motion are valid only for:

Any rotational motion

Constant angular velocity

Variable angular acceleration

Constant angular acceleration

Just like the linear kinematic equations, the rotational versions assume that the angular acceleration is constant.

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14) For a satellite, the square of its orbital period is proportional to the:

Orbital velocity

Mass of the satellite

Cube of its orbital radius

Square of its orbital radius

This is a statement of Kepler's Third Law of planetary motion.

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15) A satellite in a 'parking orbit' is one which is:

In a geostationary orbit

In an orbit around the Sun

Temporarily in a low orbit before boosting higher

No longer in use

Spacecraft are often placed in a stable, low parking orbit to check systems before moving to their final trajectory.

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16) The moment of inertia of a thin rod (mass M, length L) about an axis through its center is:

(1/2)ML²

ML²

(1/12)ML²

(1/3)ML²

This is the standard formula for a thin rod rotated about its center of mass.

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17) A flywheel gains a speed of 540 rpm in 6 seconds. Its angular acceleration is:

18π rad/s²

9π rad/s²

3π rad/s²

6π rad/s²

First, convert 540 rpm to rad/s: 540 × (2π/60) = 18π rad/s. Then, α = Δω/Δt = (18π - 0)/6 = 3π rad/s².

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18) A body moves in a circle with increasing speed. The angle between its velocity and acceleration is:

Greater than 90°

Less than 90°

90°

180°

The total acceleration has a centripetal component (at 90° to velocity) and a tangential component (parallel to velocity). The resultant vector is at an acute angle.

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19) One radian is approximately equal to:

57.3°

90°

180°

360°

Since 2π radians = 360°, one radian = 360° / (2π) ≈ 57.3°.

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20) In uniform circular motion, which quantity remains constant?

Displacement

Acceleration

Speed

Velocity

The term 'uniform' in uniform circular motion specifically means that the magnitude of the velocity (the speed) is constant.

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Circular Motion Test. 3

1 / 20

1) For an object in equilibrium, the net torque acting on it must be:

Maximum

Equal to the net force

Constant but non-zero

Zero

For rotational equilibrium, there must be no net turning effect, meaning the sum of all torques is zero.

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2) If Earth shrank to half its radius (mass constant), the length of a day would be:

6 hours

24 hours

12 hours

48 hours

Moment of inertia I ∝ R². If R becomes R/2, I' becomes I/4. By conservation of angular momentum (Iω = I'ω'), ω' becomes 4ω. A faster rotation means a shorter day: T' = T/4 = 24/4 = 6 hours.

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3) The moment of inertia of a body does NOT depend on:

The axis of rotation

The mass of the body

The angular velocity of the body

The distribution of mass

Moment of inertia is an intrinsic property of an object's mass distribution, independent of its motion.

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4) For a conical pendulum, the centripetal force is provided by:

The weight of the mass

The horizontal component of tension

The vertical component of tension

The tension in the string

Tension has a vertical component that balances weight and a horizontal component that provides the centripetal force.

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5) Escape velocity is √2 times the:

Terminal velocity

Orbital velocity for a close orbit

Speed of light

Speed of sound

The formula for orbital velocity is v_o = √(GM/R) and for escape velocity is v_e = √(2GM/R). Therefore, v_e = √2 v_o.

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6) A wheel with angular momentum 10 J·s is stopped by a 2 N·m torque. How long does it take?

5 s

0.2 s

2 s

20 s

Since τ = ΔL/Δt, then Δt = ΔL/τ = 10 J·s / 2 N·m = 5 s.

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7) A body rotates through an angle of 3 revolutions. The angle in radians is:

6/π

6π

3π

3/π

Since one revolution is 2π radians, three revolutions is 3 × 2π = 6π radians.

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8) The linear acceleration of a point on a rotating wheel is the vector sum of its tangential acceleration and:

Gravitational acceleration

Centripetal acceleration

Zero

Angular acceleration

Total linear acceleration is the vector sum of the tangential component (changing speed) and the centripetal component (changing direction).

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9) Communication satellites are usually placed in which type of orbit?

Geostationary orbit

Elliptical orbit

Low Earth orbit (LEO)

Polar orbit

A geostationary orbit allows a satellite to remain over the same point on Earth's surface, which is ideal for continuous communication.

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10) Which law explains why a spinning top remains upright?

Conservation of Energy

Newton's First Law

Kepler's Laws

Conservation of Angular Momentum

A spinning object has angular momentum. To change its direction (i.e., to make it fall), a torque is required. Rapid spinning makes it resistant to such torques.

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11) Why doesn't water fall out of a bucket swirled in a vertical circle?

Gravity and normal force provide centripetal force

Centrifugal force pushes the water out

Gravity is zero at the top

Adhesive forces are too strong

At the top, both gravity and the normal force (if needed) act downwards, providing the centripetal force to keep the water moving in a circle.

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12) A person's weight at the North Pole is W. Their apparent weight at the equator is:

Zero

Less than W

Greater than W

Equal to W

At the equator, part of the gravitational force provides the centripetal force for rotation. The apparent weight is thus reduced: W_app = mg - mω²r.

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13) If a body is in rotational equilibrium, which statement must be true?

Net force is zero

Its angular acceleration is zero

Its angular momentum is zero

It is not rotating

Rotational equilibrium means the net torque is zero, so there is no change in angular velocity (i.e., zero angular acceleration).

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14) The rate of change of angular momentum is equal to the:

Applied force

Angular acceleration

Moment of inertia

Applied torque

This is the rotational equivalent of Newton's second law: τ = dL/dt.

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15) The total energy of a satellite in a stable orbit is:

Always negative

Equal to its kinetic energy

Always zero

Always positive

The negative potential energy is greater in magnitude than the positive kinetic energy, signifying a bound system.

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16) The term 'g' in artificial gravity (e.g., '2g') refers to:

The speed of the habitat

Earth's surface gravity (≈ 9.8 m/s²)

The universal gravitational constant

Mass in grams

Artificial gravity is often measured in multiples of Earth's gravitational acceleration. '2g' means an acceleration of 2 × 9.8 m/s².

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17) For a rolling sphere, what is the ratio of rotational KE to total KE?

1/2

5/7

2/5

2/7

KE_rot = (1/2)Iω² = (1/5)Mv². KE_total = (7/10)Mv². The ratio is (1/5)/(7/10) = 2/7.

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18) Tangential acceleration in circular motion changes the object's:

Mass

Direction of velocity

Speed

Angular velocity

Tangential acceleration acts along the tangent to the path, thus changing the object's speed.

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19) A hoop and a solid disk (same mass/radius) are released from an incline. The hoop's speed at the bottom will be:

Equal to the disk's speed

Greater than the disk's speed

Less than the disk's speed

Zero

Because the hoop has a larger moment of inertia, it will have a smaller translational velocity compared to the disk.

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20) A point P on the rim of a rolling wheel has maximum velocity when it is:

At the same level as the center

At the top of the wheel

The velocity is always constant

At the bottom of the wheel

At the top, the tangential velocity (v) and the translational velocity (v) are in the same direction, so the resultant velocity is v + v = 2v.

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Circular Motion Test. 4

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1) A fan rotating at 1200 rpm stops in 10 seconds. The average angular deceleration is:

4π rad/s²

40π rad/s²

20π rad/s²

2π rad/s²

First, ωᵢ = 1200 × (2π/60) = 40π rad/s. Then, α = (ω_f - ωᵢ)/t = (0 - 40π)/10 = -4π rad/s². The magnitude is 4π rad/s².

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2) For an object rolling without slipping, the condition relating v and ω is:

v = r/ω

v > rω

v = rω

v < rω

This condition ensures that the point of contact with the surface is instantaneously at rest.

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3) The direction of the torque vector is:

Opposite to the position vector r

Along the force vector F

Perpendicular to the plane containing r and F

Along the position vector r

This is the definition of the cross product τ = r × F. The direction is given by the right-hand rule.

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4) Einstein's theory of gravitation interprets gravity as:

A force acting at a distance

The curvature of spacetime

An exchange of gravitons

An electromagnetic phenomenon

In general relativity, massive objects warp spacetime, and this curvature is what we perceive as gravity.

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5) If a platform's radius is halved and its angular velocity is doubled, the centripetal acceleration will be:

Halved

Quadrupled

Unchanged

Doubled

The original acceleration is a = rω². The new acceleration is a' = (r/2)(2ω)² = (r/2)(4ω²) = 2(rω²) = 2a.

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6) The work done by a torque τ in rotating a body through an angle θ is:

W = τα

W = τω

W = τθ

W = τ/θ

This is the rotational work formula, analogous to linear work W = Fd.

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7) The dimensions of the universal gravitational constant G are:

[ML⁻¹T⁻²]

[M⁻¹L³T⁻²]

[MLT⁻²]

[L²T⁻²]

From F = G(m₁m₂/r²), we rearrange to get G = Fr²/(m₁m₂). The dimensions are [MLT⁻²][L²]/[M²] = [M⁻¹L³T⁻²].

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8) If a satellite is moved to an orbit of larger radius, its speed:

Increases

Remains the same

Decreases

Becomes zero

To maintain a stable orbit at a greater distance, less orbital speed is required to balance the weaker gravitational pull.

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9) What is the frequency of a geostationary satellite?

1 Hz

1/86400 Hz

24 Hz

1/3600 Hz

The period (T) is 24 hours = 86400 s. Frequency is f = 1/T, so f = 1/86400 Hz.

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10) A 10 N·m torque is applied to a flywheel (I = 2 kg·m²). The angular acceleration is:

12 rad/s²

5 rad/s²

20 rad/s²

0.2 rad/s²

Using τ = Iα, we get α = τ/I = 10 N·m / 2 kg·m² = 5 rad/s².

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11) Angular impulse is equal to the change in:

Rotational kinetic energy

Angular momentum

Moment of inertia

Angular velocity

Just as linear impulse equals the change in linear momentum, angular impulse (τΔt) equals the change in angular momentum (ΔL).

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12) A solid sphere rotates in free space. If it expands (mass constant), its angular velocity will:

Decrease

Increase

Become zero

Remain unchanged

As the radius increases, the moment of inertia (I ∝ R²) increases. Since angular momentum (L = Iω) is conserved, the angular velocity (ω) must decrease.

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13) A circular disk has I = (1/2)MR² about its center. What is its moment of inertia about a diameter?

(1/4)MR²

MR²

(2/5)MR²

(1/2)MR²

By the perpendicular axis theorem, I_z = I_x + I_y. For a disk, I_x = I_y and I_z = (1/2)MR². So, 2I_x = (1/2)MR², which gives I_x = (1/4)MR².

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14) The critical speed at the top of a vertical loop for a mass to complete the loop is:

√(gR)

√(5gR)

√(2gR)

At the top, the minimum centripetal force is provided by gravity alone (tension T=0). So, mg = mv²/R, which gives v = √(gR).

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15) A couple is a pair of forces that are:

Equal, opposite, and separated by a distance

Unequal and opposite

Equal, opposite, and collinear

Equal and in the same direction

This arrangement produces a pure torque (turning effect) without any net translational force.

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16) A body starts from rest with angular acceleration of 2 rad/s². What is its angular displacement after 4 s?

16 rad

32 rad

4 rad

8 rad

Using θ = ωᵢt + (1/2)αt², with ωᵢ = 0, we get θ = (1/2)(2)(4)² = 16 rad.

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17) Which quantity has the same dimensions as angular momentum?

Power

Planck's Constant (h)

Work

Torque

Planck's constant has units of Joule-seconds (J·s), which gives dimensions of [ML²T⁻²]·[T] = [ML²T⁻¹], the same as angular momentum.

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18) If the angular velocity vector of a spinning body points out of the page, it is spinning:

Impossible to tell

Clockwise

Into the page

Counter-clockwise

Using the right-hand rule, if you curl your fingers counter-clockwise, your thumb points out of the page.

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19) If a particle's linear momentum is constant, its angular momentum is conserved only if:

The force on it is zero

It moves in a circle

It moves along a line through the reference point

The torque is constant

Angular momentum is L = r × p. If the particle moves along a line passing through the reference point, r is parallel to p, so their cross product L is zero and conserved.

20 / 20

20) The rotational power delivered by a torque τ is given by:

P = τω

P = τα

P = τθ

P = τ/ω

This is the rotational equivalent of the linear power formula P = Fv.

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Circular Motion Test. 5

1 / 20

1) The total angular momentum of a system is conserved when the net external ________ is zero.

Force

Torque

Work

Impulse

This is the fundamental condition for the conservation of angular momentum.

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2) A satellite in an elliptical orbit has its greatest speed when it is:

Constant throughout the orbit

At the ends of the minor axis

Farthest from the planet (apogee)

Closest to the planet (perigee)

By conservation of angular momentum (L=mvr), when the radius 'r' is smallest, the velocity 'v' must be largest.

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3) A ballerina spins with arms outstretched. When she brings her arms in:

Her rotational kinetic energy is conserved

Her angular velocity increases

Her moment of inertia increases

Her angular momentum decreases

She decreases her moment of inertia (I). To conserve angular momentum (L=Iω), her angular velocity (ω) must increase.

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4) Which statement about centripetal and centrifugal forces is correct?

Centrifugal is real, centripetal is fictitious

Both are real forces

They are an action-reaction pair

Centripetal is real, centrifugal is fictitious

Centripetal force is the real net force causing circular motion. Centrifugal force is an apparent outward force in a non-inertial (rotating) frame.

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5) The center of mass of a rigid body:

Is always at its geometric center

May be outside the body

Must be inside the body

Depends on the body's velocity

A hollow sphere, a ring, or an L-shaped object can have a center of mass located in empty space.

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6) A car turns on a level road. The centripetal force is provided by:

The engine's thrust

The normal force

The weight of the car

Static friction between tires and road

Static friction acts horizontally, towards the center of the turn, preventing the car from skidding outwards.

7 / 20

7) A flywheel is used in an engine to:

Reduce friction

Smooth out fluctuations in rotational speed

Increase the engine's power

Increase the engine's speed

Due to its large moment of inertia, a flywheel resists changes in angular speed, storing and releasing energy to maintain a nearly constant rotation.

8 / 20

8) The escape velocity from the Moon is less than from Earth because the Moon has:

A higher temperature

A slower rotational speed

No atmosphere

Smaller mass and smaller radius

Escape velocity is v_e = √(2GM/R). The Moon's smaller mass (M) and radius (R) both contribute to a lower escape velocity.

9 / 20

9) Two gears are in mesh (40 teeth and 10 teeth). When the small gear makes 4 revolutions, the large gear makes:

4 revolutions

1 revolution

16 revolutions

8 revolutions

The gear ratio is 40:10 or 4:1. For every 4 revolutions of the smaller gear, the larger gear makes 1 revolution.

10 / 20

10) The work-energy theorem for rotation states that net work equals the change in:

Potential energy

Rotational kinetic energy

Angular momentum

Moment of inertia

This is the rotational analogue of the linear work-energy theorem. Here, W_torque = ΔKE_rotational.

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11) The time period of a simple pendulum in an orbiting satellite is:

Zero

Same as on Earth

Slightly less than on Earth

Infinite

In free fall, the effective gravity (g_eff) is zero. Since T = 2π√(L/g_eff), as g_eff → 0, T → ∞. The pendulum will not oscillate.

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12) An object in uniform circular motion has a constant:

Linear momentum vector

Acceleration vector

Position vector

Angular momentum vector

For uniform circular motion, the magnitude (Iω) and direction (along the axis) of the angular momentum vector are both constant.

13 / 20

13) A turntable rotates at 33 rpm. The angular velocity in rad/s is approximately:

3.5 rad/s

207 rad/s

0.55 rad/s

33 rad/s

33 rev/min × (2π rad/rev) × (1 min/60 s) = 66π/60 ≈ 3.46 rad/s.

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14) The orbital period of a planet depends on its average orbital radius and:

The mass of the planet

The planet's rotational speed

The mass of the sun

The planet's temperature

According to Kepler's Third Law as derived by Newton, T² = (4π²/GM_sun)r³. The period depends on the mass of the central body.

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15) An object in a state of 'free fall' is said to be:

Weightless

In zero gravity

Accelerating upwards

Moving at constant velocity

In free fall, an object experiences no support force, leading to the sensation of weightlessness, even though gravity is still acting on it.

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16) A body rotates with constant angular deceleration. A graph of its angular velocity (ω) vs. time (t) is a:

Parabola

Hyperbola

Straight line with negative slope

Straight line with positive slope

The equation is ω_f = ωᵢ + αt. With a constant negative α, this is the equation of a straight line (y = c + mx) with a negative slope.

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17) The SI unit of moment of inertia is:

kg·m²/s

kg·m/s

kg·m

kg·m²

Moment of inertia is defined as I = Σmᵢrᵢ², so its units are mass (kg) times distance squared (m²).

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18) The 'g-force' experienced by a pilot in a sharp turn is a measure of:

The aircraft's speed

The engine's thrust

Apparent weight as a multiple of normal weight

The gravitational field strength

The term 'g-force' refers to the total acceleration felt by the pilot, which creates a sensation of increased apparent weight.

19 / 20

19) At what height 'h' is gravity half its surface value? (R is Earth's radius)

√2 R

(√2 - 1)R

R/2

We need g' = g/2. So, GM/(R+h)² = GM/(2R²). This gives (R+h)² = 2R², so R+h = √2 R, and h = (√2-1)R.

20 / 20

20) The value of gravitational acceleration 'g' is maximum at the:

Tropic of Cancer

Same at all places

Equator

Poles

The Earth is slightly flattened, making the poles closer to the center. This, plus the lack of rotational effect, makes 'g' maximum at the poles.

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Important Rotational And Circular Motion Quiz Test Online

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