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  3.   a boy pushes a load of 1260 n at a constan

  A boy pushes a load of 1260 N at a constant speed up a 25° inclined...

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Physics

  1.   A boy pushes a load of 1260 N at a constant speedup a 25° inclined plane onto a platform 1.0 m high. If the boy’smaximum force is 300 N parallel to the plane and the coefficient ofkinetic friction is 0.4, what must be the length of the plane?

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