Figure shows a body of mass m moving with a uniform speed v along a circle of radius r . change in v

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3-2.Motion in Plane

easy

Figure shows a body of mass m moving with a uniform speed $v$ along a circle of radius $r$. The change in velocity in going from $A$ to $B$ is

A$v\sqrt 2 $

B$v/\sqrt 2 $

C$v$

Dzero

Solution

(a)$\left| {\overrightarrow {\Delta v} } \right| = 2v\sin (\theta /2) = 2v\sin \left( {\frac{{90}}{2}} \right) = 2v\sin 45$$ = v\sqrt 2 $

Standard 11

Physics

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