Homework Help: Physics (Formula)

Posted by Eve on Wednesday, February 13, 2013 at 10:23pm.

I just need the formula.

A 2.5 kg object is whirled in a vertical circle whose radius is 0.89 m. If the time of one revolution is 0.94 s, the magnitude of the tension in the string (assuming uniform speed) when it is at the top is

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