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1. The circular cylinder weighs 50 lb and is held by a cord fixed to its periphery at B and to the ground at A. If the coefficient of static friction is 0.60, calculate the force P required to cause the cylinder to slip.
2. The design of the cam-lock vise provides a quick positive clamping action with a friction coefficient between the cam and the movable jaw A of 0.30.
(a) As the cam and lever are rotating clockwise approaching the locking position shown with P = 30 lb, determine the clamping force C.
(b) With P removed, find the friction force F in the locking position.
(c) Determine the force P', opposite from P, required to release the clamp.
A submarine moves steadily through water at a depth of 350m and a speed of 5 m/s. a) find the static pressure p far away from the submarine at the 350m depth 2) find the pressure on the nose of the submarine.(kpa)
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