Keeping the banking angle same, to increase the maximum speed with which a vehicle can travel on the curved road by 10%, the radius of curvature of the road has to be changed from 20 m to
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a
16 m
b
18 m
c
24.2m
d
30.'5 m
answer is C.
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Detailed Solution
Here banking angle and g are same, henceV2r= constant ∴ V12V22=r1r2 or r2=r1×v22v12or r2=20×110/100×v12v12=20×121100=24⋅2m
Keeping the banking angle same, to increase the maximum speed with which a vehicle can travel on the curved road by 10%, the radius of curvature of the road has to be changed from 20 m to