1.

What is the smallest radius of a circle at which a bicyclist can travel if his speed is 7 m//s and the coefficient of static friction the between tyres and road is 0.25

Answer»

10 m
20 m
5 m
15 m

Solution :`(MV^(2))/(r )=MU mg, v=sqrt(murg) RARR r=(v^(2))/(mu_(s)g)`


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