Question
Physics Question on laws of motion
A person is standing in an elevator. In which situation he finds his weight less?
A
When the elevator moves upward with constant acceleration
B
When the elevator moves downward with constant acceleration
C
When the elevator moves upward with uniform velocity
D
When the elevator moves downward with uniform velocity
Answer
When the elevator moves downward with constant acceleration
Explanation
Solution
When elevator is moving downward with constant acceleration a, then net weight of the person is given by
w' = m (g - a)
ie, the person finds his weight less.