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A torque of 175 lb ft is needed to free a large rusted on nut. The length of the wrench is 1.10 ft. What force, in pounds, must be applied to free it?
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A rock takes 2.1 s to hit ground when it is thrown straigh up from a cliff with initial velocity of 7.5 m/s. Calculate height of the cliff in m & length it would take to reach the ground if thrown down with same speed.
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