Q. 17

A person of mass 50 kg stands on a weighing scale on a lift. If the lift is descending with a downward acceleration of 9 m s-2, what would be the reading of the weighing scale? (g = 10 m s-2)

Answer :

Let the acceleration be ‘a’ when the lift is descending, then the apparent weight decreases on weighing scale


So




Apparent weight due to reaction force by the lift on weighing scale will be





Reading of weighing scale


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