Question

a bucket full of water weighing 40 kg is lifted to a height 40 m , by means of a rope weighing 20 kg. the work done is ​

Answer 1

Answer:

work done = force * displacment*cos(theta) and also equal to the potential energy stored in pulling the bucket up

we have given mass 40(of bucket)+20(mass of rope)=60 and gravity=10

and heigth=40m

so potential energy=mgh

we get =24000j or 24 kjoule

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