A ball of mass is attached to a string of length . It is being swung in a vertical circle with enough speed so that the string remains taut throughout the ball's motion. Assume that the ball travels freely in this vertical circle with negligible loss of total mechanical energy. To avoid confusion, take the upward direction to be positive throughout the problem. At the top and bottom of the vertical circle, label the ball's speeds Vt and Vb, and label the corresponding tensions in the string Tt and Tb*Tt. and Tb have magnitudes Tt and Tb.
Find Tb - Tt the difference between the magnitude of the tension in the string at the bottom relative to that at the top of the circle.
Express the difference in tension in terms of and . The quantities and should not appear in your final answer.
2007-04-15
19:03:25
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2 answers
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asked by
SimonP
1
in
Physics