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1. As shown in th fig..
1. As shown in th figure, two blocks with masses m₁ and m₂ (m₁=2m₂) are connected by a massless string that hangs over a pulley of mass M (M=2m₁) and radius R. The string does not slip. Treat the pulley as a disk.
(b) Assuming that the system starts from rest, find the speed of m₁ after it has fallen by H.
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