Angular motion and tension problem.
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Angular motion and tension problem.

[From: ] [author: ] [Date: 11-10-07] [Hit: ]
What is the tension in the string when the ball is at the top?What is the tension in the string when the ball is at the bottom?0.9 * 4.40^2 / 1.08 = 0.......
A 900 g ball moves in a vertical circle on a 1.08 m-long string. If the speed at the top is 4.40 m/s, then the speed at the bottom will be 7.85 m/s.

What is the tension in the string when the ball is at the top?

What is the tension in the string when the ball is at the bottom?

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let the tension in the string = T
when the ball is at the top
0.9 * 4.40^2 / 1.08 = 0.9 * 9.81 + T
solving T for answer

when the ball is at the bottom
0.9 * 7.85^2 / 1.08 + 0.9 * 9.81= T
solving T for answer
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