Chapter 8, Problem 13P

The brake is to be designed to be self locking, that is, it will not rotate when no load P is applied to it when the disk is subjected to a clockwise couple moment Mo. Determine the distance d of the lever that will allow this to happen. The coefficient of static friction at B is µs = 0.5. P -1.5 ft B Mo 1 ft 1.5 ft

Based on Problem 8-13 from the textbook. The brake is to be designed to be self locking, that is, it will not rotate when no load P is applied to it when the disk is subjected to a clockwise couple moment Mo. Determine the distance d of the lever that will allow this to happen. The coefficient of static friction at B is H₂- Us=0.48 a=0.6ft P a Mo 1 ft

M. 0.3 m The block brake is used to stop the wheel from rotating when the wheel is subjected to a couple moment. Determine the smallest force P that should be applied as well as the magnitude of the corresponding reaction force at support C. Use the couple moment Mo = 430 N-m, the coefficient of static friction between the wheel and the block of 0.6, a = 1.8 m, b = 0.8 m, and c = 0.075m. Round all answers to the nearest integer. The smallest force P that should be applied is: N. The magnitude of the reaction force at support C is: N.