• anonymous
How does centripetal force cause circular motion?
  • Stacey Warren - Expert
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  • jamiebookeater
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  • Mani_Jha
A force causes an acceleration. An acceleration is a change of either magnitude or direction of velocity. Now suppose a centripetal force acts towards a fixed point(The center). Let the point move tangentially with a speed v. Now, the tangential speed wants to displace the particle in a 'STRAIGHT LINE'. But the centripetal force attracts it towards the center. As a result, the point TURNS ABOUT the center. Or the direction of velocity is changed due to the centripetal force. This turning occurs at every instant, and results in the circular path. |dw:1333329225709:dw| Get it?
  • anonymous
|dw:1333334528439:dw| since centripetal acceleration=mV^2/r ...where r is the radius of the circle... if we let there is no centripetal acceleration then it's value will be zero. i.e mV^2/r=0 this is only possible if r tends to infinity,V is speed and it cannot be zero here.Hence if there is no centripetal acceleration then r become tends to infinity and the path become like a plate..then we can say centripetal acceleration cause circular motion..

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