A horizontal force P is exerted on a 20-kg box in order to slide it up a 30° incline.
Problem 3:
A horizontal force P is exerted on a 20-kg box in order to slide it up a 30° incline. The friction force retarding the motion is 80N. How large must P be if the acceleration of the moving box is to be
a) Zero?
b) 0.75m/s2?
Homework Answers
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A horizontal force P is exerted on a 20-kg box in order to slide it up a 30° incline.
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A horizontal force of 200 N is required to cause a 15 kg block to slide up a 20° incline with an acceleration of 0.25 m/s2 . Find: a) the friction force on the block. (134 NJ b) the coefficient of friction. ( 0.65)
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