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Q: Work done by a man standing on a platform holding 10kg suitcase is-
  • A. 100J
  • B. 0J
  • C. 98J
  • D. 980J
Correct Answer: Option B - W = F × d Here, F = force d = displacement But there is no displacement of the man, Hence, d = 0 Work done = F×0 W = 0
B. W = F × d Here, F = force d = displacement But there is no displacement of the man, Hence, d = 0 Work done = F×0 W = 0

Explanations:

W = F × d Here, F = force d = displacement But there is no displacement of the man, Hence, d = 0 Work done = F×0 W = 0