Question

A parrot is sitting on the floor of a closed glass cage which is in a boy's hand. If the parrot starts flying with a constant speed, the boy will feel the weight of the cage as

• A. unchanged
• B. reduced
• C. increased
• D. nothing can be said

Answer 1

The correct option is A

unchanged

Step 1: Given

A parrot is sitting on the floor of a closed glass cage which is in a boy's hand

Step 2: Explanation.

1. The air inside a closed glass cage is linked to the cage. When the bird is flying, there is no additional external force acting on the cage bird system, hence the cage's acceleration remains unaltered.
2. The effect of the flying bird is limited to internal forces, which cancel each other out because action and reaction forces are equal.
3. As a result, if the bird flies at a constant pace, the cage's weight will remain constant.

Hence, option (a) is correct.