Gravity 101

• Every particle repels every other particle with a force proportional to their masses and directly proportional to the distance between them.
• Every particle attracts every other particle with a force proportional to their masses and inversely proportional to the distance between them. (correct)
• Every particle repels every other particle with a force proportional to their masses and inversely proportional to the distance between them.
• Every particle attracts every other particle with a force proportional to their masses and directly proportional to the distance between them.

• F = G m2 / r^2
• F = G m1 m2 / r
• F = G m1 m2 / r^2 (correct)
• F = G m1 / r^2

• The first test of the speed of light.
• The first test of Einstein's theory of general relativity.
• The first test of Coulomb's law of electrical forces between charged bodies.
• The first test of Newton's law of gravitation between masses in the laboratory. (correct)

<p>Coulomb's law has the product of two charges in place of the product of the masses, and the Coulomb constant in place of the gravitational constant. (D)</p> Signup and view all the answers

<p>When dealing with very strong gravitational fields. (B)</p> Signup and view all the answers