Question

the power of a pump which can pump 200kg of water at a height of 200m in 10s is g=10m/s2​

Answer 1

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Here is your required answer ⤵️

$power = \frac{w}{t}$

$w = mgh$

$w = 200 \times 10 \times 200$

$w = 400000 \: newton \ \\ \\ \\ w = 4 \times {10}^{5}$

$p = \frac{4 \times {10}^{5} }{10}$

$power = 4 \times {10}^{4} watt \\ \\ p = 40000 \: watts = 4 \: kw$

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Answer 2

step by step explanation :

P(power) = W(work done)/t(time)

Workdone =F(force) × s(displacement)

In some cases , the workdone is also equal to it's potential energy if it's at some height.

W = mgh(potential energy)

where m is mass , g is gravity and h is height

= 200 × 10 × 200

= 400000N

P = W/t

= 400000/10

= 40000W

= 40kW