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a. How much work do you do on the bucket in pulling it up ? B. How much work does gravity do on the bucket ?

a. How much work do you do on the bucket in pulling it up ?     B. How much work does gravity do on the bucket ?
 

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Grade:12th pass

3 Answers

Agrata Singh
208 Points
5 years ago
Hey I am attaching the solution below. Hope this helps you. In case of any further query feel free to ask.
Emmanuel120
12 Points
5 years ago
Cause I can’t view it Waiting for your solution , I can’t open your image 
Have you send the solutions ? 
 
Agrata Singh
208 Points
5 years ago
Well then I can type it out for you
Only two forces act on the bucket, the tension applied by you through the rope(T) and weight of bucket(W)
Since the bucket moves up very slowly accn=0
T=W=mg
Now T is applied in upward dirxn so work done by T is positive and equal to W=mgd where d is the distance moved by the bucket. Putting in the values W=270 J
Similarly gravity force is applied in opposite direction of displacement so work done is negative. W=-mgd
Putting in the given values W=-270J
Now total force acting on bucket is zero. Therefore total work done on bucket is zero as W=F.d

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