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September 2, 2015

Homework Help: Physics

Posted by lala on Sunday, March 6, 2011 at 7:21pm.

Suppose a crate of mass 2.8 kg is placed on the plank in the figure below at a distance 5.1 m from the left end. Find the forces exerted by the two supports on the plank. (The mass of the plank is 12.0 kg.)
Left Support N
Right Support N

The plank set on two pivots one at 3.0m from the left, and the other 2.0m from the right. There is 7.0m between the two pivots

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