9.37 The flywheel of a gasoline engine is required to give up 540 JJ of kinetic energy while its angular velocity decreases from 640 rev/min to 540 rev/min What moment of inertia is required? Express your answer in kilogram meters squared.

A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. Rotating flywheels provide a means for storing energy in the form of rotational kinetic energy and are being considered as a possible alternative to batteries in electric cars. The gasoline burned in a 131-mile trip in a typical midsize car produces about 3.01 x 10 J of energy. How fast would a 38.5-kg flywheel with a radius of 0.597 m have to rotate to store this much energy? Give your answer in rev/min. Number i jud eTextbook and Media Units >

A thin 155 g disk with a diameter of 8.50 cm rotates about an axis through its center with 0.260 J of kinetic energy. What is the speed (in m/s) of a point on the rim?

A carousel has a radius of 1.70 m and a moment of inertia of 122 kg - m². A girl of mass 43.5 kg is standing at the edge of the carousel, which is rotating with an angular speed of 3.20 rad/s. Now the girl walks toward the center of the carousel and stops at a certain distance from the center d. The angular speed of the carousel is now 5.0 rad/s. How far from the center, in meters, did the girl stop? m

The drive chain in a bicycle is applying a torque of 1.550 N- m to the wheel of the bicycle. The wheel has a moment of inertia of 0.150 kg • m?. What is the angular acceleration of the wheel?my answer was 10.33 rad/s^2? Can we also write the answer as 10 rad/s^2?

Jeff, running outside to play, pushes on a swinging door, causing its motion to be briefly described by ? = 8.5t2 + 0.650t + 1.75, where t is in seconds and ? is in radians. At t = 0 and at t = 1.50 s, what are the following? (a) angular position of the door ?(0)  =   rad ?(1.50)  =   rad (b) angular speed of the door ?(0)  =   rad/s ?(1.50)  =   rad/s (c) angular acceleration of the door ?(0)  =   rad/s2 ?(1.50)  =   rad/s2

Three children are riding on the edge of a merry‑go‑round that has a mass of 105 kg and a radius of 1.70 m . The merry‑go‑round is spinning at 20.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg. If the 28.0 kg child moves to the center of the merry‑go‑round, what is the new angular velocity in revolutions per minute? Ignore friction, and assume that the merry‑go‑round can be treated as a solid disk and the children as point masses.   final angular velocity:   rpm

A thin 105 g disk with a diameter of 7.00 cm rotates about an axis through its center with 0.615 J of kinetic energy. What is the speed (in m/s) of a point on the rim?

A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. Rotating flywheels provide a means for storing energy in the form of rotational kinetic energy and are being considered as a possible alternative to batteries in electric cars. The gasoline burned in a 187-mile trip in a typical midsize car produces about 2.84 x 109 J of energy. How fast would a 9.42-kg flywheel with a radius of 0.237 m have to rotate to store this much energy? Give your answer in rev/min.

Three children are riding on the edge of a merry‑go‑round that has a mass of 105 kg and a radius of 1.40 m. The merry‑go‑round is spinning at 20.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg. If the 28.0 kg child moves to the center of the merry‑go‑round, what is the new angular velocity in revolutions per minute? Ignore friction, and assume that the merry‑go‑round can be treated as a solid disk and the children as point masses.