A particle of mass $40 k g$ moves in a circle of radius $40 m$ . If its speed is equal to $20 m / s$ then find its radial acceleration.

10 m / s^{2}

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20 m / s^{2}

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30 m / s^{2}

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40 m / s^{2}

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Solution

The correct option is A $10 m / s^{2}$
Given:
speed = $20 m / s$
radius = $40 m$
radial acceleration = $\frac{v^{2}}{r}$
= $\frac{400}{40}$
=10 $m / s^{2}$

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A particle of mass 40kg moves in a circle of radius 40m. If its speed is equal to 20m/s then find its radial acceleration.

The correct option is A 10m/s2Given: speed = 20 m/sradius = 40 mradial acceleration = v2r=40040=10 m/s2

A particle of mass $40 k g$ moves in a circle of radius $40 m$ . If its speed is equal to $20 m / s$ then find its radial acceleration.

The correct option is A $10 m / s^{2}$
Given:
speed = $20 m / s$
radius = $40 m$
radial acceleration = $\frac{v^{2}}{r}$
= $\frac{400}{40}$
=10 $m / s^{2}$