Question

A person is standing in an elevato.r 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 elevator moves upward with uniform velocity.
• D. When elevator moves downward with uniform velocity.

Answer 1

The correct option is B

When the elevator moves downward with constant acceleration.

Let ‘N’ be normal force by elevator floor on man.

Then, mg – N = ma (Assuming downward acceleration)

$\Rightarrow$ N < mg

which matches with given condition in option (2).