Question

A bird is inside a wire cage hung from a spring balance. The spring balance reading is $R_{1}$ when the bird is flying and $R_{2}$ when it is at rest inside the cage. Which of the following is correct?

• A. $R_{1} \gg R_{2}$
• B. $R_{1} >R_{2}$
• C. $R_{1}< R_{2}$
• D. $R_{1}=R_{2}$

Answer 1

Answer: (C)

$R_{1}< R_{2}$ because flying bird will get its weight shared by air