Question

A man lifts a 21.1 kg bucket from a well and does 3.1 kJ of work. How deep is the well? Assume that the man lifts the bucket at constant speed. Answer in units of m.

I am not sure if I did this right:

(mg)(d)= Wnet

(21.1 kg)(9.81)(d)= 3100J
d= 14.98 meters

Answer 1

yes
m g h = 3,100
21.1 * 9.8 * h = 3,100
h = about 15 meters up

Answer 2

If a man lifts a 13.0 kg bucket from a well and does 5.00 kJ of work, how deep is the well? Assume that the speed of the bucket remains constant as it is lifted.

Answer 3

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