1.

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 αh (h << Re) from the earth surface. The value of α will be _____.(use Re = 6400 km)

Answer»

Correct answer is 2

g(1 - 2h/R) = g(1 - d/R)

2h/R = d/R

αh = d

α = 2



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