8. Centripetal Forces & Gravitation

According to Newton's Law of Gravity, which factors determine the gravitational force $F$ between two objects?

What is the approximate value of Earth's gravitational acceleration at ground level ($g$)?

According to Newton's Law of Gravity, which planet in our solar system exerts the greatest gravitational pull? ($F=\frac{G{m}_1{m}_2}{r^2}$)

According to Newton's Law of Gravity, on which factors does the weight of an object depend?

According to Newton's Law of Gravity, which of the following best describes the force between two masses $m_1$ and $m_2$ separated by a distance $r$?

According to Newton's Law of Gravity, what happens to the gravitational force between two objects if the distance between them is doubled? $F=\frac{\mathrm{G\; m\_1\; m\_2}}{r^2}$

(II) You are explaining to friends why an astronaut feels weightless orbiting the Earth in a space station, and they respond that they thought gravity was just a lot weaker up there. Convince them that it isn’t so by calculating how much weaker (in %) gravity is 380 km above the Earth’s surface.

Which alignment of the $\mathrm{Sun}$, $\mathrm{Earth}$, and $\mathrm{Moon}$ is primarily responsible for causing neap tides according to Newton's Law of Gravity?

In the context of flight, which force acts in the direction opposite to the $\mathrm{thrust}$ force and counteracts it?

According to Newton's Law of Gravity ($F=\frac{\mathrm{Gm\_1m\_2}}{r^2}$) and the forces acting on a falling object, when does a skydiver achieve terminal velocity?

Given that the Moon's mass is $7.4\times {10}^{22}$ kg and it orbits the Earth at a distance of $3.8\times {10}^8$ m with a period of 27.3 days, which of the following expressions correctly gives the mass of the Earth according to Newton's Law of Gravity and circular motion?

Which of the following is primarily responsible for causing a bullet to spin as it is fired from a gun?

According to Newton's Law of Gravity, which two factors determine the magnitude of the gravitational force between two objects?

According to Newton's Law of Gravity, how do the mass of the Sun and the distance between the Sun and the Earth affect the length of one year (the orbital period of the Earth)? $T=\sqrt{\frac{4{\pi }^2{r}^3}{GM}}$ where $T$ is the orbital period, $r$ is the distance between the Sun and the Earth, $M$ is the mass of the Sun, and $G$ is the gravitational constant.

According to Newton's Law of Gravity, what would most likely happen to the Earth and Moon system if the Sun suddenly ceased to exist?