A satellite is moved from 6,800 km to 13,600 km from Earth. What is the effect on gravitational force?

Gravitational force follows the inverse-square law: it is proportional to 1 divided by the square of the distance from Earth’s center. The distance increases from 6,800 km to 13,600 km, which is twice as far, so the force becomes 1 ÷ 2² = 1/4 of its original value. Therefore, it is quartered.

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