What torque would have to be applied to a rod with a length of #8 m# and a mass of #8 kg# to change its horizontal spin by a frequency #1 Hz# over #9 s#?
The torque (for the rod rotating about the center) is
The torque (for the rod rotating about one end) is
The moment of inertia of a rod, rotating about the center is
The rate of change of angular velocity is
So the torque is
The moment of inertia of a rod, rotating about one end is
The torque is