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A block weighing 100 lbf sits on a 20º inclined surface. The coefficients of static and dynamic (kinetic) friction are 0.5 and 0.3 respectively. A force F = 10 t lbf is applied where t is in seconds
(a) determine if the block will slide on the inclined surface when F = 0,(b) find the time, t, when the force F begins to move the block up the incline,(c) calculate the acceleration of the block when it just begins to move up the incline and(d) calculate the distance in feet the block moves in 20 seconds
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