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Q: A boy raises a box with a weight of 120 N through a height of 2 m. The work done by the boy is-
  • A. 60 J
  • B. 120 J
  • C. 240 J
  • D. 180 J
Correct Answer: Option C - Given, Weight = mg = 120N, Height (h)= 2 m Work done = mgh = 120×2 = 240J.
C. Given, Weight = mg = 120N, Height (h)= 2 m Work done = mgh = 120×2 = 240J.

Explanations:

Given, Weight = mg = 120N, Height (h)= 2 m Work done = mgh = 120×2 = 240J.