No Need for “Force” of Gravity - Continued
Einstein’s theory is very mathematical and difficult to actually use.
Because Newton’s Theory is still very accurate for small gravitational fields, and it is MUCH easier to use, it is used for “everyday” problems”
- Falling Bodies, Projectiles, . . .
- Moon going around the Earth
- Planetary motion EXCEPT that very accurate descriptions require Einstein’s theory of General Relativity (orbit of Mercury)
General Relativity VERY important to understand the universe!
- Black Holes, Big Bang, …..
- More about this later in course!