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The force of gravity between two objects is proportional to

(mass1) x (mass2)/(distance between them)2 , but it's not equal to that fraction. To get the actual value of the forces, you

have to multiply that fraction by a 'proportionality' constant, and since we're

talking gravity here, the constant is called the Gravitational Constant.

If everything in the fraction is in SI (metric) units, then the gravitational

constant is 6.67 x 10-11newton-meter2/kilogram2 And when you multiply the fraction by that constant, you get the actual value

of the force, in newtons.

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11y ago

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