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A bridge is in the form of a semicircle ...

A bridge is in the form of a semicircle of radius `40m`. The greatest speed with which a motorcycle can cross the bridge without leaving the ground at the highest point (frictional force is negligibly small)

A

`40 ms^(-1)`

B

`20 ms^(-1)`

C

`30 ms^(-1)`

D

`15 ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
`v = sqrt(gr) = sqrt(10 xx 40) = 20 m//s`
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