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April 20, 2014

Homework Help: AP Physics - Static Equilibrium

Posted by Phillip on Friday, November 27, 2009 at 11:07pm.

A man doing push-ups pauses in the position shown in the figure. His mass is 75-kg. Determine the normal force exerted by the floor on each hand and on each foot.

img145.imageshack.us/img145/7130/picture1n.png

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a = 40 cm
b = 95 cm
c = 30 cm
W = mg = 735 N

I can't figure out how to find the amount of force being exerted at the hands/feet if you don't know the mass at each location. Help would be very much appreciated.

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