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COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

When a car of mass $$m$$ is moving with speed $$v$$ along a circle of radius $$r$$ on a level road, the centripetal force is provided by $$f$$, where $$f$$ denotes

($$\mu_s$$ $$\to$$ coefficient of friction, N $$\to$$ normal reaction)

A
$${{m{v^2}} \over r} = f \le {\mu _s}N$$
B
$$f < {\mu _s} = {{m{v^2}} \over r}$$
C
$$f = {\mu _s}N = {{m{v^2}} \over r}$$
D
$$f = {\mu _k}N = {{m{v^2}} \over r}$$

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