Overview
Peter(Skyward series) is a pilot on a far way planet, with similar gravitational forces as Earth. he is going through pilot training. A motor spins an insulated container she is in (total mass of 100 kg) around on a 4 m long arm at 250 rpm. The coefficient of kinetic friction between the container and the ground is 0.30.
a) What is the force due to friction of this system? What direction does it point? (Think carefully, because this is not the same as a car on a curve)
b) After the motor stops, what is the angular acceleration of the container as it comes to rest?
c) After the motor stops, how long does the container take to come to rest?