qz5sm08sol - July5,2008 PHY2053Discussion Quiz5(Chapter5)...

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July 5, 2008 PHY2053 Discussion Quiz 5 (Chapter 5) Name:                                   UFID: **1. (5pts) Three blocks with masses of 4.00 kg, 6.00 kg and 12.0 kg are attached by  strings   over   frictionless   pulleys:   The   6-kg   block   is   on   a   horizontal   table   with   a  coefficient of kinetic friction of 0.250. Two strings are attached to the block, one of  which passes over a pulley at the left edge of the table and connected to the 4-kg  hanging block, and the other string passes over a pulley at the right edge of the table  and connected to 12-kg hanging block. Assuming the system starts from rest, find the  speed of the 12-kg block when it falls down a distance of 3.00 m Since the three blocks are connected together, when the 12-kg block falls down a distance   Δx = 3 m, the 4-kg rises 3 m up and 6-kg block slides 3 m on the table. They also have a   common velocity v. Applying the work-energy theorem to the system, we have W nc  = ΔE  - μm
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qz5sm08sol - July5,2008 PHY2053Discussion Quiz5(Chapter5)...

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