Question

how much work is required to lift a 360 kilogram piano to a window whose height is 10 m from the ground

Answer 1

work = mgh =360 * 10 * 10 = 36000 joules

                                    or

work = mgh =360 * 9.8 * 10 = 35280 joules

Answer 2

Explanation:

Given that,

Mass of piano, m = 360 kg

It is placed at a height of 10 m from the ground.

To find,

Work required to lift it.

Solution,

Work done by an object is given by :

$W=mgh\\\\W=360\times 10\times 10\\\\W=36000\ J\\\\W=36\ kJ$

So, the work required to lift the piano is 36 kJ.

Learn more,

Work done

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