a solid metal ball of mass M and radius R is rolling without slipping down and incline. A static friction force of magnitude f is acting on the ball. What is the magnitude of the torque due to static friction?
a.) zero b.) rfcos theta c.) rfsin theta d.)Rf e. MRF
ki+ui=kf=uf (conservation of energy)
The Attempt at a Solution
since the ball is rolling without slipping, why is there friction involved? do we just simply ignore friction, so the answer will just be the definition of torque: rfsin theta ?