The disk clutch is used in standard transmissions of automobiles. If four springs are used to force two plates A and B together, determine the force in each spring required to transmit a moment of M = 600lb-ft across the plates. The coefficient of static friction between A and B is u, = 0.3.

The coefficient of friction between all surfaces is us = 0.5 and HK = 0.3. The mass of A is 23 kg and the mass of B is 39 kg. Assume the pulley is mass less and frictionless. Determine the smallest force P required to start the system moving. P A A B Cable

The beam AB has a negligible mass and thickness and is subjected to a triangular distributed loading. It is supported at one end by a pin and at the other end by a post having a mass of 50 kg and negligible thickness. Determine the two coefficients of static friction at B and at C so that when the magnitude of the applied force is increased to P = 150 N, the post slips at both B and C simultaneously. Take F = 940 N/m. (Figure 1) Figure -2 m 400 mm 300 mm Part A Determine the coefficient of static friction at B Express your answer using three significant figures. HB = Submit Part B HC = Submit ΕΠ ΑΣΦ VI Determine the coefficient of static friction at C. Express your answer using three significant figures. Provide Feedback ↓↑ vec • Request Answer Π|| ΑΣΦ ↓↑ Request Answer vec ? ?

The uniform 20-lb ladder rests on the rough floor forwhich the coefficient of static friction is s = 0.45 andagainst the smooth wall at B. Determine the horizontalforce P the man must exert on the ladder in order tocause it to move. Answer: P = _____________