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August 2, 2015

Homework Help: College Physics

Posted by Andrew on Saturday, April 20, 2013 at 12:02am.

A large 61.0 kg board is propped at a 45 degree angle against the edge of a barn door 2.9m wide.
How great a horizontal force must a person behind the door exert (at the edge) in order to open it? Assume that there is negligible friction between the door and the board but that the board is firmly set against the ground.

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