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Homework Help: PHYSICS

Posted by MORENA on Friday, September 16, 2011 at 2:44am.

A CRATE OF MESS 50KG IS LYING ON A 30DEGREE INCLINE, A STEEL BALL OF MASS 20KG IS ATTACHED TO THE CRATE WITH A ROPE.THE ROPE IS GOING OVER A FRICTIONLESS PULLEY.CALCULATE THE FRICTION COEFICIENT NEEDED SO THAT THE 50KG BLOCK STAYS AT REST.

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