A car is moving along a horizontal curve of radius 20 m , and coefficient of friction between the road and wheels of the car is `0.25` . If acceleration due to gravity is `(9.8 m//s^(2))`, then its maximum speed is
A. `3 m//s`
B. `5 m//s`
C. `7 m//s`
D. `9 m//s`

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1 Answers

Correct Answer - C
`V=sqrt(mu rg)=sqrt(0.25xx20xx9.8)=sqrt(49)`
`=7 m//s`

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