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JIPMER 2012

Exam: JIPMER
Year: 2012
Subject: Physics
Chapter: Motion in One Dimension

JIPMER 2012 · Physics · Motion in One Dimension

A coin is dropped in a lift. It takes time t_1 to reach the floor...

A coin is dropped in a lift. It takes time

t_1

to reach the floor when lift is stationary. It takes time

t_2

when lift is moving up with constant acceleration. Then,

Options

A $t_1 \geq t_2$
B $t_2 \gt t_1$
C $t_1=t_2$
D $t_1 \gt \gt t_2$

Correct answer

A. $t_1 \geq t_2$

Step-by-step solution

For stationary lift

t_1=\sqrt{\frac{2 h}{g}}

and when the lift is moving up with constant acceleration

t_2=\sqrt{\frac{2 h}{g}}

t_1 \gt t_2

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