A child swings a tennis ball attached to a 0.633-m string in a horizontal circle above...
A child swings a tennis ball attached to a 0.633-m string in a horizontal circle above his head at a rate of 4.50 rev/s.
(a) What is the centripetal acceleration of the tennis ball?
(b) The child now increases the length of the string to 1.00 m but has to decrease the rate of rotation to 3.50 rev/s. Is the speed of the ball greater now or when the string was shorter?
(c) What is the centripetal acceleration of the tennis ball when the string is 1.00 m in length?
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A child swings a tennis ball attached to a 0.633-m string in a
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