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April 19, 2014

Homework Help: physics

Posted by Anonymous on Thursday, October 27, 2011 at 11:02pm.

A window washer uses the chair and pulley arrangement shonw in the figure to lift himself up the side of a building. The window washer's mass is 70 kg and the chair's mass is 10 kg. With what force must he pull down on the rope in order to accelerate upward at

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