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28 December, 09:16

The mass of a bucket full of water is 15 Kg. It is being pulled up from a 15m deep well. Due to a hole in bucket 6 Kg of water flows out. Find the work done in pulling it out of the well.,

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  1. 28 December, 09:34
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    Solution:

    workdone = change in potential energy

    W = Force times distance

    = (m - dm) g • (x)

    = mgx - (dm (gx))

    = (15 * 10 * 15) - (6/15 gx. dx)

    =2250 - (6/15 x10x 225/2)

    =2250 - (3 x 15x 10)

    = 2250 - 450

    = 1800 Joule

    The answer is 1800 Joules.
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