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April 18, 2014

Homework Help: Science

Posted by John on Wednesday, November 30, 2011 at 5:41pm.

Two blocks with masses m1 = 3.9 kg and m2 = 6.7 kg are connected by a string that hangs over a pulley of mass M = 2.2 kg and radius R = 0.11 m as shown above. The string does not slip. Assuming the system starts from rest, use energy principle find the speed of m2 after it has fallen by 0.4 m. Treat the pulley as a disk.

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