A bird is sitting in a large closed cage which is placed on a spring balance. It records a weight of $25\,N$. The bird (mass $m = 0.5 \,kg$) flies upward in the cage with an acceleration of $2\,m/{s^2}$. The spring balance will now record a weight of ........ $N$
A bird is sitting in a large closed cage which is placed on a spring balance. It records a weight of $25\,N$. The bird (mass $m = 0.5 \,kg$) flies upward in the cage with an acceleration of $2\,m/{s^2}$. The spring balance will now record a weight of ........ $N$
$24$
$25$
$26$
$27$
A bird is sitting in a large closed cage which is placed on a spring balance. It records a weight of $25\,N$. The bird (mass $m = 0.5 \,kg$) flies upward in the cage with an acceleration of $2\,m/{s^2}$. The spring balance will now record a weight of ........ $N$
Since the cage is closed and we can treat bird, cage and the air as a closed (isolated) system. In this condition the force applied by the bird on cage is an internal force, due to this the reading of spring balance will not change.
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