A facility for testing the performance of motorized golf carts consists of an endless be...

A facility for testing the performance of motorized golf carts consists of an endless belt where the angle θ can be adjusted. The cart of mass m is slowly brought up to its rated ground speed v with the braking torque M on the upper pulley constantly adjusted so that the cart remains in a fixed position A on the test stand. With no cart on the belt, a torque M₀ is required on the pulley to overcome friction and turn the pulleys regardless of speed. Friction is sufficient to prevent the wheels from slipping on the belt. Determine an expression for the power P absorbed by the braking torque M. Do the static friction forces between the wheels and the belt do work?