Tuesday
July 7, 2015

Homework Help: College Physics

Posted by Taylor on Wednesday, October 10, 2012 at 9:40pm.

A 0.35 kg stone attached to a 0.8 m long string is rotated in a horizontal plane. The string makes an angle of 20° with the horizontal. Determine the speed of the stone.

I've tried tan 20= gr/v^2 = (9.8)(.8)/v^2 = 4.7 m/s and that's not the correct answer (online homework). Any help or explanation would be appreciated

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