Physics Revision : Circular Motion

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P3 : CIRCULAR MOTION

KEY FACTS ABOUT CIRCULAR MOTION:

  • When an obect moves in a circle the velocity changes because the direction changes
  • Leads to acceleration towards the centre called centripetal acceleration
  • Resultant force called centripetal force acts towards the centre
  • Increase centripetal force if - speed increases, - mass increases or -decrease the radius
  • Everyday centripetal forces: friction --> tyres & road (vechile), foot & floor (human), rope/chain of a swing --> force tension, track, gravity

 

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