# Physics

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A 2.4 kg object attached to a horizontal string moves with constant speed in a circle of radius R on a frictionless horizontal surface. The kinetic energy of the object is 95 J and the tension in the string is 315 N. Find R.

• Physics -

string tension = m V^2/R
= 2*(K.E.)/R = 315 N

Solve for R

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