Q.

A car is travelling at 36 kmph on a road. If μ=0.5 between the tyres and the road, the minimum turning radius of the car is (g=10ms–2)

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a

25 m

b

35 m

c

30 m

d

20 m

answer is A.

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Detailed Solution

The centripetal force is static friction.

μmg=mv2rr=v2μg=102(0.5)10=20m

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