Rotational And Circular Motion MCQs | Physics MCQs

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

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

The equations of rotational motion are valid only for:

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

The reaction force to the centripetal force is:

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

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

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

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

In the SI system, the unit of torque is:

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

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

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

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

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

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

In uniform circular motion, which quantity remains constant?

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

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

One radian is approximately equal to:

Communication satellites are usually placed in which type of orbit?

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

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

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

Escape velocity is √2 times the:

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

Which law explains why a spinning top remains upright?

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

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

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

Tangential acceleration in circular motion changes the object's:

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

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

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

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

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

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

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

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

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

Angular impulse is equal to the change in:

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

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

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

Which quantity has the same dimensions as angular momentum?

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

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

The direction of the torque vector is:

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

What is the frequency of a geostationary satellite?

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

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

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

Einstein's theory of gravitation interprets gravity as:

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

The dimensions of the universal gravitational constant G are:

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

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

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

A couple is a pair of forces that are:

A flywheel is used in an engine to:

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

The SI unit of moment of inertia is:

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

An object in uniform circular motion has a constant:

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

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

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

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

Which statement about centripetal and centrifugal forces is correct?

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

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

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

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

The center of mass of a rigid body:

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

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

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

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

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