Consider the internal brake of Fig. 6-13. Pivot for shoe is located 3.5 in. below the center and 1.5 in. to the left of the vertical through the center. Radius of drum = 5 in. Width of lining = 2 in. Arc of lining is 90° starting 15° CW from shoe pivot. Maximum lining pressure = 100 psi. Coefficient of friction = 0.25. Horizontal actuating force is 3.5 in. above the center. Drum rotates CW. Find value of actuating force P and torque exerted by the brake.
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