AIIMS2005PhysicsLaws of Motion
A person is standing in an elevator. In which situation he finds his weight less?
Options
- AWhen the elevator moves upward with constant acceleration.
- BWhen the elevator moves downward with constant acceleration.
- CWhen the elevator moves upward with uniform velocity
- DWhen the elevator moves downward with uniform velocity.
Correct answer
B. When the elevator moves downward with constant acceleration.
Step-by-step solution
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)) g^ with respect to the lift is . g g a is .