JEE Main Physics question
The mass of a man when standing on a lift is 60 kg. What is the weight when he is standing on the lift which is moving upward with acceleration 4.9 ms⁻²?
Answer: (A)
Solution
Apparent weight (normal reaction) R = m(g + a) = 60(9.8 + 4.9) = 60 × 14.7 = 882 N.