Question: 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 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.

Given:

a = 1.5 ft

b = 1 ft

μ s = 0.5

4,(Ng) Ng

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