If a lift is going up with acceleration, the apparent weight of a body is:
Correct answer: A. More than the true weight
- A. More than the true weight
- B. More or less the true weight
- C. Less than the true weight
- D. Equal to the true weight
Explanation
For an upward-accelerating lift, Newton's second law gives N − mg = ma, so the apparent weight is N = m(g + a), which is greater than the true weight mg. The upward acceleration requires an extra upward contact force from the floor. Students may choose 'less' by thinking only about the lift's motion rather than its acceleration.
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