Particle is moving with speed $10$ m/s parallel to x-axis start from $(0, 2 m)$ . Find angular speed of particle about origin initially.

2.5 r a d / s

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5 r a d / s

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2 r a d / s

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None of these

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Solution

The correct option is B $5 r a d / s$
Speed, $v = 10$ $m / s$
Distance from origin, $r = 2$ $m$
Angular speed, $ω = \frac{v}{r}$
$⟹ ω = \frac{10}{2}$
$⟹ ω = 5$ $r a d / s$

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