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What is the smallest radius of a circle ...

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

A

10 m

B

20 m

C

5 m

D

15 m

Text Solution

Verified by Experts

The correct Answer is:
B
`(mv^(2))/(r )=mu mg, v=sqrt(murg) rArr r=(v^(2))/(mu_(s)g)`
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