Question 21: Work, Energy and Power & Circular Motion

Question

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

Accepted Answer

The centripetal force is balanced by the normal reaction exerted i.e. $$m{v^2}/r \le \,{ \propto _s}N$$
where, $${ \propto _s}$$ is the coefficient of friction.
$$	herefore$$ $${{m{v^2}} \over r} = f \le \,{ \propto _s}N$$

Answer

$${{m{v^2}} \over r} = f \le {\mu _s}N$$

Answer

$$f < {\mu _s} = {{m{v^2}} \over r}$$

Answer

$$f = {\mu _s}N = {{m{v^2}} \over r}$$

Answer

$$f = {\mu _k}N = {{m{v^2}} \over r}$$

Work, Energy and Power & Circular Motion

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)

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