A boy weighing 600N was in a lift. The lift experienced a breakdown and started falling freely under the action of gravity, what would be the weight of the boy in the lift?
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As we know that, during free fall the only force acting is a man’s weight itself. So, both lift and the boy inside would be in a state of free fall and hence the normal contact force between the floor of the lift and the man would be zero. Therefore, the boy would experience weightlessness.