A motorcyclist riding at 36 kmh-1 has to turn a corner. Find the least radius of the curve, he shouldfollow for safe travelling, if the coefficient of friction between the tyres and the road is 0.2.

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10 m

25 m

50 m

100 m

answer is C.

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Detailed Solution

For safe circular turn, v=μrg⇒ r=v2μg⇒r=(10)20.2×10=50 m

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