A bird is sitting in a cage. Then its weight was measured something. If the bird starts flying,will the weight of the cage change?plz ans it.
1 Answer
May 9, 2017
The weight will change if its like a mesh cage, which allows passage of air.
The weight will remain the same if is completely closed, i.e. no passage of air is allowed.
Explanation:
In a mesh cage, when the bird is flying, the wind produced by the flapping of it's wings, will pass through the cage, thus not applying any force on it. So the weight of the cage is lighter when the bird is flying.
In a closed cage, lets its completely made up of glass, so no air can pass through.The wind created by the flapping, will exert a force on the walls of the cage, as its not allowed to escape, due to this force the weight of the cage will remain the same, even after the bird is flying.
