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What is the maximum speed with whi...

What is the maximum speed with which a car safely turn a around a curved horizontal road of radius 50 m ? [The coefficient of friction between the tyres and the surface of the road is 0.4 ]

A

`7 m//s`

B

`14 m//s`

C

`21 m//s`

D

`28 m//s`

Text Solution

Verified by Experts

The correct Answer is:
B
`v^(2) = mu rg = 0.4 xx50xx9.8 =196 " " therefore v= 14 m//s`
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