Q. The acceleration due to gravity at a height 1 km above the earth is the same as at a depth d below the surface of earth. Then :
A) d = $\frac{1}{2}$ km
B) d = 1 km
C) d = $\frac{3}{2}$ km
D) d = 2 km
Explanation
[Solution] $g(1 - 2h/R) = g(1 - d/R)$, so d = 2h = 2 km. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.