Exercises III — task. Science CBSE, Class 9.

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What is the magnitude of the gravitational force between the earth and a

$1\ kg$ object on its surface?
(Mass of the earth is

$6 \times 10^{24}\ kg$ and radius of the earth is

$6.4 \times 10^6\ m$ )

According to the universal law of gravitation, the force of attraction between two bodies is,

$F\ =\ \frac{Gm_1m_2}{r^2}$
$F\ =\ \frac{Gm_2}{m_1 \times r^2}$
$F\ =\ \frac{Gr^2}{m_1 \times m_2}$
$F\ =\ \frac{Gm_1}{m_2 \times r^2}$

Magnitude of the gravitational force (

$F$ )

$=$

$N$

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