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Homework Help: Physics

Posted by Sanjna on Tuesday, October 6, 2009 at 5:26pm.

A 0.20-kg ball on a string is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the string tension is 16 N. Find the tensions in the string when the ball is at twelve o'clock and at the six o'clock positions.

* Physics - bobpursley, Tuesday, October 6, 2009 at 4:52pm

at three oclock, Tension= mv^2/r

then at 12 oclock,
tension= mv^2/r-mg
and at six...
tension= mv^2/r + mg

How do I solve for the r and the v?

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