Gravity 101

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Questions and Answers

What is Newton's law of universal gravitation?

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.

What is the equation for universal gravitation?

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

What is the Cavendish experiment?

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)

What is the difference between Coulomb's law and Newton's law of gravitation?

<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