2. A woman does 500J of work in lifting a 20kg bucket of water from a well. Calculate the depth upto which the bucket is raised by her in the well. (g= 10m/s^2)
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Answer:
I think it is the answer
Explanation:
Weight of bucket + Rope of length x=m=20+0.2x
Work done in raising the rope+bucket by depth dx=dW=mg(dx)
Integrating both sides from x=0m to x=20m
⇒W=∫
0
20
(20+0.2x)(10)(dx)
⇒W=4000+400=4400J
hope this helps you
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