Problem 10DQ
A block rests on an inclined plane with enough friction to prevent it from sliding down. To start the block moving, is it easier to push it up the plane or down the plane? Why?
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Solution 10DQ For an object of mass m close to the surface of the earth, gravity acts in a downward direction (toward the center of the earth) and has magnitude mg , regardless of the presence or absence of other forces and regardless of the object's motion, velocity, or acceleration. Gravity acts on the block with the same magnitude and direction regardless of whether the block is sliding up, sliding down, or remaining where it is. Thus, the analysis of the gravitational force and its components is completely...
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Chapter 5, Problem 10DQ is Solved
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