8. Centripetal Forces & Gravitation

According to $Newton’s$ Law of Gravity, which of the following can cause a moving object to change its direction?

According to Newton's Law of Gravity ($F=\frac{\mathrm{Gm\_1m\_2}}{r^2}$) and Bernoulli's principle ($P+\frac{1}{2}{\rho }^2{v}^2+\mathrm{\rho gh}$), why can a $180-\mathrm{km}/h$ wind blowing over the flat roof of a house cause the roof to lift off the house?

Given three point masses $a$, $b$, and $c$ placed at the vertices of a right triangle with $a$ at the right angle, $b$ at distance $r$ along the x-axis from $a$, and $c$ at distance $r$ along the y-axis from $a$, what is the magnitude of the net gravitational force on mass $a$ due to masses $b$ and $c$? (Assume all masses are equal to $m$ and use $G$ for the gravitational constant.)

According to Newton's Law of Gravity, which regions on Earth receive the least direct sunlight throughout the year? $F=\frac{\mathrm{G\; m\_1\; m\_2}}{r^2}$

Which of the following best explains why $Newton’s$ Law of Gravity does not describe how a magnet can cause something to move?

Two 65 kg astronauts leave earth in a spacecraft, sitting 1.0 m apart. How far are they from the center of the earth when the gravitational force between them is as strong as the gravitational force of the earth on one of the astronauts?

According to Newton's Law of Gravity, the greater the masses of interacting objects, the $F=\frac{\mathrm{G\; m\_1\; m\_2}}{r^2}$

Which factor is most responsible for the changes in seasons on Earth according to Newton's Law of Gravity ($F=\frac{\mathrm{Gm\_1m\_2}}{r^2}$)?

Which of the following statements about the gravitational force attracting two galaxies is true?

In the context of atmospheric motion and Newton's Law of Gravity ($F=G\frac{m\mathrm{\_1}m\mathrm{\_2}}{r^2}$), which force allows the wind to cross the isobars once the forces acting on it are in balance?

Which statement best describes the difference between Newton's law of gravity and the theory of gravity?

Two uniform spheres, each with mass M and radius R, touch each other. What is the magnitude of their gravitational force of attraction?