JEE Main 2022 Physics question
If the acceleration due to gravity experienced by a point mass at a height h above the surface of earth is same as that of the acceleration due to gravity at a depth (h << from the earth surface. The value of will be . (use = 6400 km)
Answer: 2
Solution
At a height h << R, − 2h/R), and at a depth d, − d/R). Equating, 2h/R = d/R, so and .