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CENTRIPETAL FORCE

Brooklyn College 1 CENTRIPETAL FORCE Purpose a. To study the characteristics of uniform circular motion. b. To experimentally measure CENTRIPETAL FORCE in a circular motion. Theory When an object of mass M is revolving in a circular motion of radius R, the object is in accelerating motion. The radial component of the acceleration, called CENTRIPETAL acceleration is given by ,2 Rvac (1) which is directed to the center of the circular orbit. In a uniform circular motion, the speed, v, of the velocity vector is constant.

where , f and T are angular speed, frequency, and period of revolution respectively. In terms of f and T, we can rewrite the Equation (2) as follows , 4 4 2 2 2 T MR F c MRf (4) By measuring the time of revolution of a uniform circular motion, centripetal force can be determined. Apparatus

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