OnlineCBT
Physics · GRAVITATION
हिन्दीThe escape speed from the surface of Earth is approximately \( 11.2\text{ km/s} \). If the acceleration due to gravity on the Moon is \( g/6 \) and its radius is \( R_E/4 \), the escape speed from the Moon's surface would be approximately:
Correct answer · Option B
\( 2.3\text{ km/s} \)
Explanation
Using \( v_e = \sqrt{2gR} \), \( v_{e,\text{moon}} = \sqrt{2(g/6)(R_E/4)} = \frac{1}{\sqrt{24}} v_{e,\text{earth}} \approx \frac{11.2}{4.9} \approx 2.3\text{ km/s} \).
