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In the gear-pulling assembly shown, the square-threaded screw AB has a mean radius of 0.9375 in. add

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In the gear-pulling assembly shown, the square-threaded screw AB has a mean radius of 0.9375 in. add a lead of 0.25 in. Knowing that the coefficient of static friction is 0.10, determine the couple which must be applied to the screw to produce a force of 1000 lb on the gear. Neglect friction at end A of the screw.


A

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A

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