What torque would have to be applied to a rod with a length of #3 m# and a mass of #1 kg# to change its horizontal spin by a frequency of #3 Hz# over #2 s#?
1 Answer
Feb 4, 2017
The torque
Explanation:
The torque is the rate of change of angular momentum
The moment of inertia of a rod is
The rate of change of angular velocity is
So the torque is