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Centripetal Force

Edexcel A-level PhysicsFurther MechanicsLesson 6 of 15

Applying Newton's second law F = ma to the centripetal acceleration gives F = mv2/r

Since v = r ω , the centripetal force F = mω2r.

According to Newtons second law, the centripetal force is proportional to the centripetal acceleration and takes place in the same direction i.e towards the centre of the circle.

Diagram

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