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 Form 4 Physics uniform circular motion online lessons

Banked tracks as applied in uniform circular motion.

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Answer Text:
Banked tracks
-As a vehicle moves round a bend, the centripetal force is provided by the sideways friction between the tyres and the surface, that is; Centripetal force = #(mv^2)/r# = frictional force
-To enable a vehicle to turn along a bend at high speed the road is raised on the outer edge to attain a saucer like shape and this is known
as banking, where part of the centripetal force necessary to keep the vehicle on track is provided by the weight of the vehicle.
-This allows cars to negotiate bends at critical speeds.