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07_P51InstructorSolution - 7.51 Model Use the particle...

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7.51. Model: Use the particle model for the two blocks. Assume a massless rope, and massless, frictionless pulleys. Visualize: Note that for every meter block 1 moves forward, one meter is provided to block 2. So each rope on 2 m has to be lengthened by one-half meter. Thus the acceleration constraint is 1 21 2 . aa =− Solve: Newton’s second law for block 1 is
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