Derive the following formulas relating the load W and the force P exerted on the handle of
Question:
(a) P = (Wr/a) tan (θ + φs), to raise the load;
(b) P = (Wr/a) tan (φs + θ), to lower the load if the screw is self-locking;
(c) P = (Wr/a) tan (θ + φs) to hold the load if the screw is not self-locking.
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Related Book For
Vector Mechanics for Engineers Statics and Dynamics
ISBN: 978-0073212227
8th Edition
Authors: Ferdinand Beer, E. Russell Johnston, Jr., Elliot Eisenberg, William Clausen, David Mazurek, Phillip Cornwell
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