H2P-7
Centripetal force
H2 Physics · JC 1 · Medium · Centripetal force
A small car moves in a horizontal circle of radius r on a frictionless track banked at angle θ. The only forces on the car are its weight mg and the normal reaction N from the track. Which equation relating these quantities must hold for circular motion at speed v?
- N cos θ = mv²/r
- N sin θ = mg
- tan θ = v²/(rg)
- N = mv²/r
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