A body of mass $2.5 k g$ is thrown vertically upwards from the ground level. It reaches a maximum height of $100 m$ in $10 s e c o n d s$ . Find the power required to throw the ball in the above case. $(T a k e g = 10 m s^{- 2})$

100 w a t t

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200 w a t t

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250 w a t t

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300 w a t t

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Solution

The correct option is C $250 w a t t$
In the given case, the work done $W$ is equal to change in its potential energy.
Given,
Height, $h = 100 m$
Work done = $m g h$ = $2.5 \times 10 \times 100$ = $2500 J$ .
Time taken to reach the maximum height = $10 s$
Power = $\frac{W o r k d o n e}{t i m e t a k e n}$
= $\frac{2500}{10}$ = $250 w a t t$ .

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A body of mass 2.5 kg is thrown vertically upwards from the ground level. It reaches a maximum height of 100 m in 10 seconds. Find the power required to throw the ball in the above case.(Take g=10 ms−2)

The correct option is C 250 wattIn the given case, the work done W is equal to change in its potential energy. Given, Height, h = 100 m Work done = mgh = 2.5×10×100 = 2500 J. Time taken to reach the maximum height = 10 s Power = Work donetime taken = 250010 = 250 watt.

A body of mass $2.5 k g$ is thrown vertically upwards from the ground level. It reaches a maximum height of $100 m$ in $10 s e c o n d s$ . Find the power required to throw the ball in the above case. $(T a k e g = 10 m s^{- 2})$