Homework Help: physics

Posted by myra on Wednesday, April 25, 2012 at 12:04pm.

A mass of 300 g is attached to a string that is 1.21 m in length. The mass is whirled in a horizontal circle on a surface and completes 7.00 rotations in a time of 2.71 s. The force of tension in the string is 92.7 N. Determine the force of friction between the mass and the surface.

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