8. Centripetal Forces & Gravitation

Which of the following best describes the effect of gravity on objects at the surface of $Earth$?

According to Newton's Law of Gravity, which of the following factors primarily determines the gravitational force between two objects ($F=G\frac{m_1{m}_2}{r^2}$)?

Which of the following best describes how $\text{Newton's Law of Gravity}$ relates to the cause of earthquakes?

According to Newton's Law of Gravity, in what direction does the gravitational force $F=\frac{\mathrm{G\; m\_1\; m\_2}}{r^2}$ act on a planet due to the Sun?

Which description best explains why there are two high tides and two low tides each day on Earth according to Newton's Law of Gravity ($F=\frac{\mathrm{Gm\_1m\_2}}{r^2}$)?

According to Newton's Law of Gravity, how does increasing the distance between two masses affect the gravitational force between them?

According to Newton's Law of Gravity, which of the following changes could cause an apple hanging from a tree branch to fall to the ground?

According to Newton's law of universal gravitation, what explains the gravitational attraction between Earth and the Moon?

$\text{Which force pulls an orbiting body toward the center of its orbit?}$

Which law best describes why the planets are pulled toward the $Sun$ and orbit it?

According to Newton's Law of Gravity, which of the following best describes the relationship between the gravitational force and the masses of two objects?

Which of the following is a similarity between the magnetic force and the gravitational force?