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posted by  sharehan on 11/4/2009 12:29:44 PM  |  status: Live  |  Earned Karma: 0

3cq

Course Textbook Chapter Problem Needs by
Algebra Based Physics College Physics (8th) by Serway, Faughn, Vuille 5 3CQ 11/5/2009 at 6:00:00 AM
Question Details:
If the height of the playground slide is kept constant, will the final speed differ in the speed of the bumpy slide or be the same, assuming there is no friction. Now when friction is involved, will it make a difference on the slides?

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posted by jerry2009 on 11/4/2009 11:27:23 PM  |  status: Live
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Response Details:

    *    In the absence of friction , the speed remains same.     [  Velocity , V = √ ( 2 g h ) ]

          The speed at the bottom is directly proportional to the square root of height.  It is independent of

          the length of the slide.

    *   In the case of surface with friction, the final speed is less compared to the previous case.  Here, it

         depends on the length of the slide also.
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