Question

mass of a man is 80 kg is on weighing scale in a lift which is moving upward with uniform acceleration of 5ms^-2 what would be regarding on scale ( g=10ms^-3)

Answer 1

For a lift accelerating upwards, Normal Reaction R = mg + ma
R = 80(10 + 5)
R = 80(15)
R = 1200 N

Hence reading on scale would be 1200 N.