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# Another problem?? watch

1. Another stupidity of mine.

A ball is tied to one end of a string. The other end of the string is fixed. The ball is set in motion around a vertical circle without friction. At the top of the circle, the ball has a speed of v = (Rg)^(1/2). At what angle (from the horizontal line) should the string be cut so that the ball will travel through the center of the circle?

I've solve it but I'm not sure.
2. i assume the string is inextensible?
3. (Original post by helbrida)
Another stupidity of mine.

A ball is tied to one end of a string. The other end of the string is fixed. The ball is set in motion around a vertical circle without friction. At the top of the circle, the ball has a speed of v = (Rg)^(1/2). At what angle (from the horizontal line) should the string be cut so that the ball will travel through the center of the circle?

I've solve it but I'm not sure.
I get ø=22°
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Edit: correction to answer - small error - sorry
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