A bird is in a wire cage hanging from a spring balance. The reading of the balance is taken when the bird is flying about in the cage, and when the bird is at rest in the cage. The first reading will be

much greater than the second

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greater than the second

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less than the second

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same as the second

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Solution

The correct option is B less than the second
When the bird flies the normal reaction provide will be zero on the bird.When the bird is not flying the cage will provide a normal reaction equal to the weight of the bird,so first reading will be less than second.

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A bird is in a wire cage hanging from a spring balance. The reading of the balance is taken when the bird is flying about in the cage, and when the bird is at rest in the cage. The first reading will be

The correct option is B less than the secondWhen the bird flies the normal reaction provide will be zero on the bird.When the bird is not flying the cage will provide a normal reaction equal to the weight of the bird,so first reading will be less than second.

The correct option is B less than the second
When the bird flies the normal reaction provide will be zero on the bird.When the bird is not flying the cage will provide a normal reaction equal to the weight of the bird,so first reading will be less than second.