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Q5.13 A man of mass 70 kg stands on a weighing scale in a lift which is moving
(d) What would be the reading if the lift mechanism failed and it hurtled down freely under gravity?
Answers (1)
(d) If the lift falls freely then the acceleration of lift will be acceleration due to gravity.
Using Newton's law of motion we can write :
or
or
Thus the reading of weighing scale will also be zero since there is no normal force.
This state is called the state of weightlessness.
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