Question

the work done in lifting a 10 kg load of bricks to the top of a tower 20 m high is

Answer 1

W=mgh

W=10×10×20

W= 2000J

Hope it helps u

Answer 2

Given that,

Mass of load, m = 10 kg

Height of the top of tower, h = 20 m

To find,

The work done in lifting the load.

Solution,

Work done by an object is given by the product of force and displacement caused due to that force. It can be calculated as :

$W=Fd\\\\W=mgh\\\\W=10\times 10\times 20\\\\W=2000\ J\\\\W=2\ kJ$

So, the work done in lifting the load is 2 kJ.

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Work done

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