Two bugs ride a turntable which is rotating at a constant rate of 4 rad/s. Bug B is at a radius of 4 cm, while bug A is at a radius of 8 cm. Which of the following is true?

A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s². What is the time interval required for it to reach a 4.2 rad displacement after starting from rest

A 0.12-m-radius grinding wheel takes 5.5 s to speed up from 2.0 rad/s to 11.0 rad/s. What is the wheel's average angular acceleration?

A 0.30m radius automobile tire rotates how many rad after starting from rest and accelerating at a constant 2.0 rad/s² over a 5.0 s interval?

As a young boy swings a yo-yo parallel to the ground and above his head, the yo-yo has a centripetal acceleration of 250 m/s^2. If the yo-yo’s string is 0.50 m long,what is the yo-yo’s tangential speed?

In order to do a lot of flips an Olympic diver would want:

When you carry a heavy load with one arm, why do you tend to hold your free arm away from your body?

Torque is the product of a force exerted on an object times the length of the lever arm.

In order for a seesaw to be in rotational equilibrium, the sum of the torques acting on it have be balanced.

A bug on a turning phonograph record will make more turns per minute if it is located toward the center of the record.

The centripetal force exerted on stunt motorcyclist Biker Bob while riding on the inner vertical surface of a circular track is

If the translational velocity of an object is 3 m/s, and is located a distance of 2 m from the axis of rotation, what is the object's angular velocity?

Which would have a greater linear velocity?

Which of the following is NOT a unit of rotational speed?

Which will produce more torque to loosen the lug nut?

A wrench is used to tighten a nut. A 15N perpendicular force is applied 5m away from the axis of rotation as it turns. What is the torque applied to the wrench?

A solid sphere, solid cylinder, and a hollow hoop all have equal masses and radii. If the three of them are released simultaneously at the top of an inclined plane and do not slip, which one will reach the bottom first?

The drive chain in a bicycle is applying a torque of 0.850 N ∙ m to the wheel of the bicycle. You can treat the wheel as a thin uniform hoop (or ring) with a mass of 0.750 kg and a radius of 33.0 cm. What is the angular acceleration of the wheel?

An object completes 1.5 circular orbits in half a minute. What is its approximate angular velocity?

Which of the following is NOT a unit of rotational speed?

An automobile (2000 kg) travels around a circular track of radius 430 m at a speed of 22 m/s. What is the coefficient of friction needed to keep this car on the track?

Moment of inertia is the resistance to change in...

A model airplane is guided in a horizontal circular path by a cord of length 16 m. If it has a constant speed of 18 m/s and a mass of 200 g, what is the tension in the cord?

An automobile travels around a circular track of radius 0.120 km at a speed of 2.5 m/s. What is the centripetal acceleration?

A Lincoln Continental and a VW Beatle are making a turn. The Lincoln is four times more massive than the Beatle. If they make the turn at the same speed, then how do the centripetal forces acting on the two cars compare?

The Earth completes one of these every 365.25 days

An industrial flywheel has a greater rotational inertia when most of its mass is

A flywheel's diameter is twice that of another of the same shape and mass. Roational inertia of the larger flywheel is

A ring, a disk, and a solid sphere begin rolling down a hill together. Which reaches the bottom first?

A torque acting on an object tends to produce

A uniform solid cylinder with a radius of 10 cm and a mass of 3.0 kg is rotating about its center with an angular speed of 33.4 rpm. What is its kinetic energy?