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MotionLab
The force that holds moons in orbit and drops an apple — same formula, wildly different scales.
The gravitational constant G is extremely small (6.674×10⁻¹¹), so gravitational force between everyday-sized objects is vanishingly tiny — it only becomes significant when at least one mass is astronomically large, like a planet.
Force falls off with the square of distance — doubling the distance between two masses cuts the gravitational force to a quarter, not half, which is why gravity weakens quickly as you move away from a planet.
Gravitational force (N)
687.137
F = G·m₁m₂ / r² (Newton's law of universal gravitation)
What you entered
F = G × m₁m₂ ÷ r²
6.674e-11 × 5.97e+24 × 70 ÷ 6371000²= 6.8714e+2 NResult
Gravitational force (N): 687.137
The gravitational attraction between the two masses is 687.137 N.