Solved: In a truck-loading station at a post office, a
Chapter 7, Problem 7.65(choose chapter or problem)
In a truck-loading station at a post office, a small 0.200-kg package is released from rest at point A on a track that is onequarter of a circle with radius 1.60 m (Fig. P7.65). The size of the package is much less than 1.60 m, so the package can be treated as a particle. It slides down the track and reaches point B with a speed of From point 4.80 m>s. B, it slides on a level surface a distance of 3.00 m to point C, where it comes to rest. (a) What is the coeffi- cient of kinetic friction on the horizontal surface? (b) How much work is done on the package by friction as it slides down the circular arc from A to B?
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