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JEE Main Physics question

PhysicsLaws of MotionJEE Main

A bird weighs 2 kg and is inside a closed cage of mass 1 kg. If it starts flying, then what is the weight of the bird-and-cage assembly?

Answer: (C)

Solution

Since the cage is closed, the system (bird + cage + enclosed air) is isolated; whether the bird flies or perches,

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Question ID VK-153175