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  4. An air-tight cage with a parrot sitting in it is suspended from the spring balance. The parrot starts flying. The reading of the spring balance will

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Q. An air-tight cage with a parrot sitting in it is suspended from the spring balance. The parrot starts flying. The reading of the spring balance will

NTA AbhyasNTA Abhyas 2022

Solution:

The system is closed. The weight of the parrot suppresses the base of the air cage with a weight equal to the weight of the parrot. These are internal forces. So there will be no change in the reading of the spring balance