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May 23, 2015

Homework Help: physics

Posted by Ngoc on Monday, January 10, 2011 at 10:00pm.

A construction worker attempts to lift a uniform beam off the floor and raise it to a vertical position. The beam is 2.50m long and weighs 500N. At a certain instant the worker holds the beam momentarily at rest with one end at distance d=1.50m above the floor by exerting a force P on the beam, perpendicular to the beam. What is the magnitude P?

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