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April 20, 2014

Homework Help: physic

Posted by yusra on Sunday, April 18, 2010 at 4:15pm.

An object attached to the end of a string swings in a vertical circle (R = 1.2 m), as shown. At an instant when = 30a, the speed of the object is 5.1 m/s and the tension in the string has a magnitude of 20 N. What is the mass of the object?

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