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September 30, 2014

Homework Help: Physics

Posted by Ali on Friday, April 4, 2008 at 8:29pm.

A lunch tray is being held in one hand, as the drawing illustrates. The mass of the tray itself is 0.220 kg, and its center of gravity is located at its geometrical center. On the tray is a 1.00 kg plate of food and a 0.230 kg cup of coffee. Obtain the force T exerted by the thumb and the force F exerted by the four fingers. Both forces act perpendicular to the tray, which is being held parallel to the ground.
T = N (downward)
F = N (upward)
the lengths are .400m, .380m, .240m, .100m, .0500m

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