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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