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Question

A vehicle is moving with a velocity v on a curved road of width b and radius of curvature R. For counteracting the centrifugal force on the vehicle, the difference in elevation required in between the outer and inner edge of the road is

A
v2bRg
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B
vbRg
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C
vb2Rg
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D
vbR2g
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Solution

The correct option is A v2bRg

We know that for the vehicle banking
on a curved path, tanθ=v2rg.

Here, the vehicle moves with velocity
v and radius of curvature R and width is b.

So, here θ is small (refer figure) and thus, sinθ=hb=tanθ.

Now, we can equate hb=v2Rg
h=bv2Rg, will be the required elevation between the outer and inner edges of the road.


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