A bend in a level road has a radius of 100 m Find the maximum speed which a car turning this bend may have without skidding if coefficient of friction between the tyres and the road is 0 .8 S .

Answer

`28m//s` .

Explanation

Here, `r = 100 m, upsilon_(max) = ? Mu = 0.8`
The car will not skid if force of friction provides the necessary centripetal force
`f = mu = (m upsilon_(max)^(2))/(r) `
`:. upsilon_(max) = sqrt(mu rg) = sqrt(0.8 xx 100 xx 9.8) =28m//s` .