A boy is sitting on a horizontal platform in the shape of a disc at a distance of 5m from its centre. The boy begins to slip when the speed of wheel exceeds 10 rpm. The coefficient of friction between the boy and platform is: (g = 10 ms^(-2))

A boy is sitting on a horizontal platform in the shape of a disc at a

1.	A boy is sitting on a horizontal platform in the shape of a disc at a distance of 5m from its centre. The boy begins to slip when the speed of wheel exceeds 10 rpm. The coefficient of friction between the boy and platform is: (g = 10 ms^(-2))
Answer» `pi^2//6` `pi^2//18` `pi//6` `pi//2` ANSWER :B