Calculating Height of Lift in Free Fall with Thrown Object

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In a scenario involving a lift in free fall, a calculator is thrown upwards at 1 m/s from a height of 1 meter above the floor. It reaches the ceiling in two seconds, leading to a calculation of the lift's height as 3 meters. The discussion highlights that both the lift and the calculator are accelerating downward at the same rate, making the weight effectively zero within the lift. This means that the calculator's motion can be analyzed without considering gravity's effect on the lift. The key takeaway is that the lift's height is determined by the distance traveled by the calculator and its initial position.
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Homework Statement



A lift in free fall with Dr. Bhargav inside. In order to save his calculator he throws it up with 1 m/s from 1 meter above the floor of the lift. It reaches the sealing in two seconds. Calculate height of lift.



The Attempt at a Solution



As the wt in free fall=0.
Then distance traveled in 2 sec=2m
Total height =2+1=3m
:-p
 
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That would be my answer as well. Condolences to the Bhargav family.
 
The speed of the lift (and the passanger) changes as it falls downwards. This means that the speed of the calculator with respect to the lift will increase as time progresses.
 
andrevdh said:
The speed of the lift (and the passanger) changes as it falls downwards. This means that the speed of the calculator with respect to the lift will increase as time progresses.
Not with respect to the lift. Both lift and calculator are accelerating downward at the same rate. As long as you work withing the lift, you can ignore the acceleration due to gravity. That was ritwik06's point when he said "As the wt in free fall=0".
 
Well, for a while there I thought that the calculator stopped falling when it is throwed upwards (blame it on too much leave)!
 

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