Gravity Index
- Newton's Law of Gravity
- Gravitational Fields
- Gravitational Potential Energy
- Gravity, Quantum Physics, & General Relativity
You'll notice that here both g and Fg have arrows above them, denoting their vector nature. The source mass M is now capitalized. The r at the end of the rightmost two formulas has a carat (^) above it, which means that it is a unit vector in the direction from the source point of the mass M. Since the vector points away from the source while the force (and field) are directed toward the source, a negative is introduced to make the vectors point in the correct direction.
This equation depicts a vector field around M which is always directed toward it, with a value equal to an object's gravitational acceleration within the field. The units of the gravitational field are m/s2.
Gravity Index
