What torque would have to be applied to a rod with a length of #6 m# and a mass of #3 kg# to change its horizontal spin by a frequency #16 Hz# over #4 s#?
1 Answer
Jan 24, 2017
The answer 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