A person wants to drive on the vertical suirface of a large cylindrical wooden `well` commonly known as `death well` in a circus. The radius of the well 2 meter, and the coefficient of friction between the tyers of the motorcycle and the wall of the well is `0.2` the minimum speed the motorcyclist must have in order to prevent slipping should be

Options

A. `10 m//s`
B. `15 m//s`
C. `20 m//s`
D. `25 m//s`

Explanation

`N=(mv^(2))/(R )` …….(`A`)
`f_(max)=mg`
`muN=mg`
`mu(mv^(2))/(R )=mg`
`v=sqrt((Rg)/(mu))=sqrt((2xx10)/(0.2))=10m//s`