Question

A flywheel slows from 655 to 400 rev/min while rotating through 20 revolutions. What is the...

A flywheel slows from 655 to 400 rev/min while rotating through 20 revolutions.

  1. What is the (constant) angular acceleration of the flywheel?
    α=α=  rad/s2
  2. How much time elapses during the 20 revolutions?
    t=t=  s

Calculate the rotational kinetic energy of a 13-kg motorcycle wheel if its angular velocity is 141 rad/s and its inner radius is 0.280 m and outer radius 0.330 m.

KErot =  J

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