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HW #6.133 - st The figure shows a friction silent ratchet...

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Unformatted text preview: st The figure shows a friction silent ratchet for turning L the wheel counterclockwise under the action of a force P applied to the handle. The floating link AB engages the Wheel so that a = 20°. If a force P = 150 N is required to turn the wheel about its bearing at 0, determine (a)'the minimum coefficient of static friction between the link and the wheel which will ensure no slipping at B and (b) the magnitude R of the force on the pin at A. Ans. ((1) (#911111, = 0.364, (b) R = 1.754 kN ...
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