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A pictorial device which analyzes forces present on any body with the use of vectors. Allows easier grasping of problems involving either objects at equilibrium or in motion. Can be used to predict presence of forces.

1 vote
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2k views

How does the normal force change *while* I'm lifting a heavy object?

A heavy weight is resting on a surface with, with the normal force equal to the weight. So the object is stationary. (W = N) Now I try to lift the heavy object so I'm exerting some upward force U. Th …
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