What does Newton's universal constant mean and how is it used?

AI Thread Summary
Newton's universal constant, G, valued at 6.67 x 10^-11 m^3 kg^-2 s^-2, is crucial for calculating the gravitational force between two masses. According to Newton's law of gravity, this force is determined by the product of the two masses divided by the square of the distance between them, multiplied by G. The formula for gravitational force is F_g = GMm/d^2, where M and m are the masses in kilograms and d is the distance in meters. The unique units of G ensure that they cancel out appropriately, resulting in a force measured in Newtons. Understanding G is essential for applications in modern Earth science and physics.
brandonhamdy7
Messages
1
Reaction score
0
Newtons universal constant is very complicated due to that i am new to modern Earth science i searched on the net and the results were countless here is the common answer
1-G=6.67*10(squared negative 11)m(cubed)kg(squared negative 1)s(squared)
someone please tell me what all this means and how to use it?
thank you all!
 
Astronomy news on Phys.org
It is constant which determines how strong gravity is.

Newton's law of gravity says that the force of gravity acgting between two masses is equal to the the product of the two masses divided by the square of the distance between them multiplied by a constant. G is that constant.

This gives you the formula:

F_g = \frac{GMm}{d^2}

The value for G given in your post is what you use if M and m are measured in Kg and the distance between them is measured in meters. The answer will be in Newtons.
 
There's a reason you have very strange units for G. The purpose off all the units is to make everything cancel out and give you a force in the end.
 
Is a homemade radio telescope realistic? There seems to be a confluence of multiple technologies that makes the situation better than when I was a wee lad: software-defined radio (SDR), the easy availability of satellite dishes, surveillance drives, and fast CPUs. Let's take a step back - it is trivial to see the sun in radio. An old analog TV, a set of "rabbit ears" antenna, and you're good to go. Point the antenna at the sun (i.e. the ears are perpendicular to it) and there is...
3I/ATLAS, also known as C/2025 N1 (ATLAS) and formerly designated as A11pl3Z, is an iinterstellar comet. It was discovered by the Asteroid Terrestrial-impact Last Alert System (ATLAS) station at Río Hurtado, Chile on 1 July 2025. Note: it was mentioned (as A11pl3Z) by DaveE in a new member's introductory thread. https://www.physicsforums.com/threads/brian-cox-lead-me-here.1081670/post-7274146 https://earthsky.org/space/new-interstellar-object-candidate-heading-toward-the-sun-a11pl3z/ One...
Back
Top