If g on the surface of the earth is (9.8m/s^2,) its value at... | Physics | SolveeIt | Solveeit

Today, August 24

Question

If g on the surface of the earth is $9.8m/s^2,$ its value at a height of 6400 km is (Radius of the earth = 6400km).

A

$4.9ms^{-2}$

B

$9.8ms^{-2}$

C

$2.45ms^{-2}$

D

$19.6ms^{-2}$

Answer

$2.45ms^{-2}$

Explanation

Solution

$g \alpha \frac{1}{R^2}$