Question

a boy pulls a bucket of water of mass sky from a well of depth 10 cm calculate the work done ?

Answer 1

find the well depth in meters. I doubt if it is really just 10 cm deep but if really true then 0.10 meter

multiply mass in kilograms by g, about 9.8 meters/second^2 to get weight force

multiply that force by the depth to get work done.