Question

water lifted from a well of depth 50 metre if water is 20 kg and that of a rope is 0.2 kg per metre the amount of work done is​

Answer 1

Answer:

The simple way shown below

Work = (force)(distance)

If you are lifting a load, the force = weight = mg, and the distance = lifting height.

Work = (weight)(height)=(mg)h

An easy way to deal with the rope weight is to treat it as a concentrated load located at the center of gravity of the rope (i.e. at 25 m depth).

mrope=(0.2kgm)(50m)=10kg

So the total work done is:

(mgh)water+(mgh)rope=(20)(9.81)(50)+(10)(9.81)(25)

=12300 Nm

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Answer 2

Answer:

koaoaalallaoalaoa aolalalaoaa aooaoala

a

a

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