What torque would have to be applied to a rod with a length of #3 m# and a mass of #4 kg# to change its horizontal spin by a frequency #5 Hz# over #1 s#?
1 Answer
Feb 20, 2017
The torque is
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