A bird is sitting on the base in a wire cage..now if the bird flies upward its weight will decrease in all cases..!!!! Explain this
Asked by ashutosh25807
16th February 2018,
10:02 AM
Answer Verified by Expert
Answer:
When flying, the bird pushes air to the ground which will exert a downward force on the cage exactly equal to the weight of the bird. This is a direct consequence of the conservation of momentum and Newton's second & third law. Since no additional external force is acting on the cage-bird-system when the bird is flying as compared to when it's not, the acceleration on the cage can be no different. The effect due to the flying bird only concerns the internal forces and since action=reaction, they cancel.
Verified by Expert
16th February 2018,
10:57 AM
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