Question

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 1

The correct option is B When the elevator moves downward with constant acceleration

Person will feel his weight less when the lift goes down with some acceleration.

$N=m(g-a)$ where $a$ is the downward acceleration. The weighing machine will read $m(g-a)$