Question

A bird is sitting in a large closed cage which is placed on a spring balance.It records a wieght of 25N. 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?
(A) 24N
(B)25N
(C)26N
(D)27N

Answer 1

F=Ma
=0.5*2
=1n
overall F=25
the new weight =25-1=24