Question: The 5-kg bar is released from rest while in the position shown and its end rollers travel in the vertical-plane slot shown. If the speed

The 5-kg bar is released from rest while in the position shown and its end rollers travel in the vertical-plane slot shown. If the speed of roller A is 3.25 m/s as it passes point C, determine the work done by friction on the system over this portion of the motion. The bar has a length l = 700 mm.

C 30 B

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