A worker drags a crate across a factory floor by pulling on a rope tied to the crate. The worker exerts a force of 450 N on the rope, which is inclined 38 degrees to the horizontal, and the floor exerts a horizontal force of 125 N that opposes the motion. Calculate the acceleration of the crate if (a) its mass is 310 kg and (b) its weight is 310 N. Determine the coefficient of friction if (c) its mass is 310 kg and (d) its weight is 310 N.
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Explanation:
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