Question

A balloon having weight $50\, kg$ is filled with $685.2\, kg$ of helium gas at $760 \, mm$ pressure and $25^{\circ} C$. What will be its pay load if it displaces $5108 \, kg$ of air?

• A. 4372.8 kg
• B. 4392.6 kg
• C. 4444.4 kg
• D. 3482.9 kg

Answer 1

Answer: (A)

Mass of the filled balloon
$=50+685.2=735.2\, kg$
Pay load $=$ Mass of displaced air $-$ Mass of balloon
$=5108- 735.2=4372.8\, kg$