Question

Gravitation on moon is $\frac{1}{6}th$ of that on earth. When a balloon filled with hydrogen is released on moon then this.

• A. will rise with an acceleration less then $\frac{g}{6}$
• B. will rise with acceleration $\frac{g}{6}$
• C. will fall down with an acceleration less than $\frac{g}{6}$
• D. will fall down with acceleration $\frac{g}{6}$

Answer 1

Answer: (D)

will fall down with acceleration $\frac{g}{6}$

No air is present on moon unlike that on earth. Hence the hydrogen ballon would not feel any buoyant force, and it will tend to fall down with the acceleration of gravity on moon.