The forces F, and F, in a brake band and direction of rotation of the drum are as show the figure. The coefficient of friction is 0 The angle of wrap is 3t/2 radians. It is gi that R = 1 m and F, = 1 N. The torque (in exerted on the drum is

I am not entirly sure what system this problem is decribing. what do the fbd's for this look like?

The band brake of Fig. is used to control the rotation of a drum. The coefficient of friction between the belt and the 40 V-pulley is 0.10. The weight of the handle is 2 lb. If a force of 50 lb is applied to the end of the han- dle, determine the maximum torque for which no motion occurs if the torque is applied Counterclockwise. 50 Ib 3 in. +9 in- 18 in.-

A simplified disk brake assembly is shown. A force F = 30 lb is applied to the lower end of the massless brake lever at a distance d from the lever’s pivot O. The brake is located L = 0.2 ft from O at the upper end of the lever, and the coefficient of friction between the brake and the disk is ? = 0.7. The disk has a weight and radius of W = 120 lb and R = 0.25 ft, respectively, and it is initially spinning at a constant ?o = 1000 rpm. What should d be if the disk is to come to a stop in Δ? = 1??