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What is Centrifugal Force - An Explanation


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A sphere of known dimension

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Shauns Blog

What is Centrifugal Force - An Explanation

2012-02-16 at 11:58

A force which impels a thing, or parts of a thing, outward from a center of rotation. The expression was used originally by astronomers to explain why the planets do not fall into the sun. Centrifugal Force (opposite of Centripetal Force) may be observed in the action of rotating liquid in a vessel, in the tangential flying off of mud from a moving wheel, etc.

Mechanically, the reaction equal and opposite to the Centripetal Force which must act on a particle in order to constrain it to move in a curved path. If m is the mass of the particle, v its velocity and r the radius of curvature of the path, the centrifugal Force has a value mv² over r and is directed outward from the center of curvature. In the case of a body considered as composed of particles, the total Centrifugal Force is the resultant of the separate forces due to the separate particles; and the Centrifugal Moment around any axis is the summation of the moments due to these separate forces. The resultant Centrifugal Force and Moment are borne by the mechanical restraints which cause the body or its parts to move in a curved path, as the outward thrust on the rails at a curve when a railroad train passes around it. . . The greater the mass, the greater the Centrifugal Force and torque applied to the particle.