NEET Class neet Answered

Let h is the vertical distance between floor of the lift and the point where the coin is dropped.

When the lift is stationary and time taken by the coin to reach the floor of lift is t₁ , then time t₁ is given by

............................... (1)

where g is acceleration due to gravity.

When the lift is moving upward with constant acceleration a and time taken by the coin to reach the floor of lift is t₂ ,

then time t₂ is given by .

Exact ratio is calculated from the above relation by substituting the acceleration value .