A horizontal force of 200 N is required to cause a 15 –kg block to slide up 20o incline with an acceleration of 25cm/s2. Find (a) the friction force on the block and (b) the coefficient of friction.
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Explanation:
A block of weight 200N is pulled along a rough horizontal surface at constant speed by a force 100N acting at an angle 30
0
above the horizontal. The coefficient of kinetic friction between the block and the surface is: 0.58
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