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April 20, 2015

Homework Help: Physics

Posted by Lola on Friday, November 27, 2009 at 2:15am.

A boy is whirling around a stone tied at the end of a 0.71 m long string at constant angular speed of 4 revolutions per second in a plane perpendicular to the ground. The string breaks when it is making an angle of 54 degrees above the horizontal and the stone is on the way up. The stone is 0.93 m above the ground when this happens. How long does the stone take to hit the ground after the string breaks?

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