A person is standing in an elevator. In which situation he finds his weight less ?

Options

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

B

Explanation

When elevator moves downward with constant acceleration, a=g. Then person standing in an elevator find himself weightless. (g' with respect to the lift is (g-a)).