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Q:

Why is gravitational force not equal to zero?

A:

Everything has a gravitational force that weakens with the square of the distance from another object. As seen in the equation, everything has mass so there will always be a number in the numerator, and there is always a distance between two objects, so there will always be a number in the denominator. As a result, the force of gravity will always exist, but could just be really small. 

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Categories: Gravity & Air