A cyclist on a level road takes a sharp circular tu rn of rad iu s 3 m (g = 10 ms^(- 2) ). If th e coefficient of static friction between the cycle tyres and the road is 0.2, at which of the following speeds will the cyclist not skid while taking the turn ?

A cyclist on a level road takes a sharp circular tu rn of rad iu s 3 m

1.	A cyclist on a level road takes a sharp circular tu rn of rad iu s 3 m (g = 10 ms^(- 2) ). If th e coefficient of static friction between the cycle tyres and the road is 0.2, at which of the following speeds will the cyclist not skid while taking the turn ?
Answer» 14.4 km `h^(-1)` 7.2 km `h^(-1)` 9 km `h^(-1)` 10.8km `h^(-1)` Solution :`V= sqrt(mu_( s )rg )` `=squr(6)` `=2.45 m//s` `=(2.45 XX 3600)/(1000) kmh^(-1)` `=8.82 kmh^(-1)` `=9kmh^(-1)`