HSC Physics Practice Questions - HSC Physics (NSW Higher School Certificate, Year 12) Exam

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Two spherical masses m1 and m2 are separated by a distance r. If the distance between their centres is doubled to 2r, how does the gravitational force between them change?

It decreases to one-quarter of its original value. It decreases to one-half of its original value. It doubles. It quadruples.

Correct Answer:

It decreases to one-quarter of its original value.

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