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posted by Teresa on Sunday, August 26, 2012 at 9:28pm.
Forcefriction=(Psin37+15*9.8)*.70 So Pcos37 must equal to the force, solve for P. how to get the magnitude of P??how to solve for P. thanks a lot~~
P=[(F/0.7) - 15•9.8]/sin37
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