Q.
A curved section of a road is banked for a speed v .If there is no friction between the road and the tyres then
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a
a car moving with speed v will not slip on the road
b
a car is more likely to slip on the road at speeds higher than v ,than at speeds lower than v
c
a car is more likely to slip on the road at speeds lower than v , than at speeds higher than v
d
a car can remain stationary on the road without slipping
answer is A.
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Detailed Solution
For optimum angle of banking ,mV2/r cosθ = mg sinθ⇒ tanθ = V2 /rg
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