A boy lifts a suitcase of 20 kg from the ground to a height of 1.2 m

CBSE Class 9 CBSE Class 9 Science
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1

A boy lifts a suitcase of 20 kg from the ground to a height of 1.2 m. Calculate the work done by him on the suitcase. (Given, g = 10 ${{ms}^{-2}}$)

2

Given, mass, m = 20 kg, height, h = 1.2 m, g = 10 ${{ms}^{-2}}$
.’. Work done, W = mgh = 20 X 10 X 1.2 = 240 J