Monday, January 23, 2012
Why does a ball travel faster on a steeper slope than a flatter slope?
Why does a ball travel faster on a steeper slope than a flatter slope? I know that the pull of gravity is the same, but is it because there is less friction or less interference to the pull of gravity? Thanks!Why does a ball travel faster on a steeper slope than a flatter slope?The answer to your question can be found by drawing a free body diagram of the ball on a slope. An F.B.D. is especially important when breaking up forces into their respective parts. No matter what angle the slope gravity is pulling down on the ball with the same force. On a perfectly flat surface the force of gravity is counteracted by a force known as a the normal force. When your weight pushes down on the floor the floor pushes back up on you, otherwise you would plumit towards the center of the earth. As the angle of the hill is increase the normal force is directed in a different direction. I.E. the steeper the slope the greater the force of gravity that goes uncounteracted. Think of the force of gravity as an acceleration x mass (which is actually is, specifically the acceleration is 9.81 meters a second/ per second) Force(gravity) = mass x acceleration of gravity. The steeper the slope the greater the acceleration and the faster the ball will eventually move. Hope that helps.
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