A planet has mass m₁ and is at a distance r, from the sun. A second planet has mass m₂ = 10m₁ and at a distance of r₂ = 2r₁ from the sun. Determine the ratio of the gravitational force experienced by the planets.

1 : 5

2 : 5

3 : 5

4 : 5

Correct answer is B

g = $\frac{GM}{R^2}$

$\frac{G_1M_1}{r^2_1}$ = $\frac{G_2M_2}{r^2_2}$

$\frac{G_1M_1}{r^2_1}$ = $\frac{G_2 {\times}10 M_1}{(2r_1)^2}$

$\frac{G_1}{G_2}$ = $\frac{2}{5}$

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A planet has mass m₁ and is at a distance r, from the sun. A second planet has mass m₂ = 10m₁ and at a distance of r₂ = 2r₁ from the sun. Determine the ratio of the gravitational force experienced by the planets.

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