Question
Question: A man is standing on a weighing machine placed in a lift. When Stationary, his weight is recorded as...
A man is standing on a weighing machine placed in a lift. When Stationary, his weight is recorded as 40 kg. If the lift is moved upwards with an acceleration of 2 ms–2, then the weight recorded in the machine will be -(g = 10 ms–2)
A
32 kg
B
40 kg
C
42 kg
D
48 kg
Answer
48 kg
Explanation
Solution
N = m (g + a) or N = 40 (10 + 2)
or N = 480 newton or N = 48 kg - wt.