39. In Fig. 6-38 the maximum lining pressure for any point on the brake is to be limited to 100 psi; µ = 0.2. Find the torque capacity of the brake and the value of force P. Ans. T- 9,080 in-lb, P = 487 lb. 30 30° 30° 30 Fig. 6-38. Problem 39.

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Q1/ Figure shows a single block brake applied to a drum by a lever AB which is pivoted at a fixed point A. The radius of the drum is 160 mm. The coefficient of friction at the brake lining is 0.3 and the angle of contact is 40°. If the drum rotates anticlockwise, find the braking torque due to the applied force of 600 N at B. 14-200-> mm 600 N