A woman pulls a bucket of water of total mass $5\ kg$ from a well which is $10\ m$ in $10\ s$. Calculate the power used by her. [Take $g=10\ ms^{-2}$]

As given, mass of the water $m=5\ kg.$

Time taken to pull the bucket of water $t=10\ seconds$

Height of the well $h=10\ m$

Energy used to pull the bucket of water $W=mgh$

$=5\times10\times10$

$=500\ Joule$

Power used by the woman for pulling the bucket $P=\frac{W}{t}$

$=\frac{500\ J}{10\ sec.}$

$=50\ Watt$

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Updated on: 10-Oct-2022

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