Circular motion Flashcards by noob y

Q

Explain uniform circular motion

A

Resultant force is centripetal force
Centripetal force perpendicular to the motion
Acceleration is perpendicular to the motion
Net work done = zero

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Q

How to reduce the possibility of cars skidding on a turn

A

Bank the road
Normal contact force of road on car can contribute to centripetal force

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Q

Why do cars skid when turning

A

Tyres can only provide a limited amount of friction
Not enough centripetal force is supplied
Car skids

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Q

Explain energy in non-uniform circular motion

A

GPE maximum at the top
KE minimum at the top (not zero)
GPE minimum at bottom
KE maximum at bottom

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