The rate of rotation of a solid disk with a radius of #9 m# and mass of #5 kg# constantly changes from #32 Hz# to #15 Hz#. If the change in rotational frequency occurs over #6 s#, what torque was applied to the disk?
1 Answer
Jan 7, 2017
The torque is
Explanation:
The torque is the rate of change of angular momentum
The moment of inertia of a solid disc is
The rate of change of angular velocity is
So the torque is