Laws Of Motion Question 91
Question: A bird weighs 2 kg and is inside a closed cage of 1 kg. If it starts flying, then what is the weight of the bird and cage assembly[AFMC 1997]
Options:
A) 1.5 kg
B) 2.5 kg
C) 3 kg
D) 4 kg
Show Answer
Answer:
Correct Answer: C
Solution:
When the bird flies, it pushes air down to balance its weight.
So the weight of the bird and closed cage assembly remains unchanged.
