Question

Calculate acceleration due to gravity at a height 20km above the surface of earth

Answer 1

the answer is 9×10powe17

Answer 2

Given that,

Height above Earth's surface, h = 20 km

To find,

Acceleration due to gravity at a height 20 km above the surface of earth.

Solution,

The acceleration due to gravity at a height h is given by :

$g=\dfrac{GM}{(R+h)^2}$

G is universal gravitational constant

M is mas of earth

$g=\dfrac{6.67\times 10^{-11}\times 5.972\times 10^{24}}{(6400000+20000)^2}\\\\g=9.66\ m/s^2$

So, the value of acceleration due to gravity at a height 20 km above the surface of earth.

Learn more,

Acceleration due to gravity

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