Universal Law of Gravitation Quiz

Force of gravity equals $m \times g$, where $m$ is the mass of the object and $g$ is the acceleration due to gravity.

The variables in the force of gravity equation represent the mass of the object ($m$) and the acceleration due to gravity ($g$).

The equation for Newton's universal law of gravitation is: $F_{gravity} = G \times \frac{m_1 \times m_2}{r^2}$, where $G$ is the universal gravitational constant, $m_1$ and $m_2$ are the masses of the two objects, and $r$ is the distance between the centers of the two objects.

<p>The force of gravitational attraction represents the attractive force between any two objects due to gravity.</p> Signup and view all the answers

<p>The typical value of acceleration due to gravity on Earth is 9.81 meters per second squared.</p> Signup and view all the answers

<p>The accepted value of the universal gravitational constant (G) is $6.67 \times 10^{-11}$ N*m$^2$/kg$^2$.</p> Signup and view all the answers

<p>Henry Cavendish performed the first accurate measurements of the universal gravitational constant in 1798 using a large torsion balance with lead balls and telescopes for observation.</p> Signup and view all the answers

<p>'r' in the universal law of gravitation equation represents the distance between the centers of mass of the two objects, not the radius, although it may sometimes be the radius.</p> Signup and view all the answers

<p>No, Newton's universal law of gravitation states that the force of gravitational attraction only exists between two objects, and adding a third or fourth object introduces additional gravitational forces.</p> Signup and view all the answers

<p>Newton's universal law of gravitation can always be used to solve for the force of gravity between any two objects, while a separate, simpler equation is used to determine the weight of objects on Earth, recognizing the need for calculations specific to the planet's gravity.</p> Signup and view all the answers