Laws of Motion · NEET Preparation Physics
A person of mass 60 kg stands on a weighing machine inside a lift. The lift is accelerating downward with an acceleration of 2 m/s². Taking g = 10 m/…
Practice question from Laws of Motion (NEET Preparation Physics), with the correct answer and a step-by-step solution.
medium · MCQ · Q-B1E973
A person of mass 60 kg stands on a weighing machine inside a lift. The lift is accelerating downward with an acceleration of 2 m/s². Taking g = 10 m/s², the reading of the weighing machine is
- A.480 NCorrect answer
- B.600 N
- C.720 N
- D.120 N
Solution
For downward acceleration, the normal reaction is N = m(g − a) = 60(10 − 2) = 480 N. The weighing machine reads the normal reaction.
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