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The moon has a radius of 1,738,000 m and a mass of 7.35 x 1022 kg. It orbits the

earth at a radius of 3.84 x 10¹¹ m. The earth's mass is 6 x 1024 kg. What is the
force gravity between the earth and the moon?

User Grish
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1 Answer

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To calculate the gravitational force between the Earth and the Moon, we can use Newton's law of universal gravitation, which is given by:

F = (G * m1 * m2) / r²

Where F is the force of gravity, G is the gravitational constant (6.674 x 10⁻¹¹ N·(m/kg)²), m1 and m2 are the masses of the two objects (Earth and Moon), and r is the distance between the centers of the two objects.

In this case, m1 (Earth's mass) = 6 x 10²⁴ kg, m2 (Moon's mass) = 7.35 x 10²² kg, and r (distance between the Earth and the Moon) = 3.84 x 10¹¹ m.

Plugging these values into the formula, we get:

F = (6.674 x 10⁻¹¹ N·(m/kg)²) * (6 x 10²⁴ kg) * (7.35 x 10²² kg) / (3.84 x 10¹¹ m)²

Now, calculate the force:

F ≈ 1.9821 x 10²⁰ N·m²/kg² / 1.4756 x 10²³ m²
F ≈ 1.3426 x 10²⁷ N·m² / 1.4756 x 10²³ m²
F ≈ 9.09 x 10²³ N

The gravitational force between the Earth and the Moon is approximately 9.09 x 10²³ N.
User Daniel Stefaniuk
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