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Constants Part A A couple of boxes with different masses, 4.20 kg and 1.70 kg, hang 0.800 m above the floor from the ends of

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Constants Part A A couple of boxes with different masses, 4.20 kg and 1.70 kg, hang 0.800 m above the floor from the ends of a cord 5.50 m long passing over a frictionless pulley. The boxes are relea...
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