Alright heres the problem. An object that has 20 grams of mass and is siwnging horizontally with a 2 meter ratius. it makes 10 rotations within 12 seconds.(adsbygoogle = window.adsbygoogle || []).push({});

the question is How many times faster would the stopper have to be spun to increase the tention of the string by a factor of 4?

now, i know Fc=M (V sq'ed)/R.

Mass stays the same, so does the radious(I belive) and the tention force is = to FC so fc has to be increased by a factor of 4 . So the only real thing to change is the V.

I just dont see how.

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# Homework Help: This problem is driving me NUTS!

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