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Physics (Potential and Kinetic Energy)

Two masses, one 4 kg and the other 2 kg are connected by a string and hung over a frictionless pulley. A student initially holds the two masses so they are the same. She then releases them. What is the change in potential energy when the 4 kg mass has fallen 0.12 m?

Posted in English, asked by Libby, 2 years ago. 670 hits.
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