Newtonian Gravity: Crash Course Physics #8

25 Comments

1. I love crash course😍

2. So the people before isaac newton is all floating because gravity wasn't invented yet

3. The law of attraction No4 says that U are very attractive.

4. Brahmagupta discovered it way before newton

5. Is Kepler's 2nd law related to integrals?

6. Do any of you notice Newton's mistake? Here's a brainteasing hint: Demonstrable projectile physics vs Sir Isaac Newton's Principia pages 512 and 513.

7. My experience from the student days is that, for science, it's better not to talk too fast.

8. can u tell me why is it is radius is squared in the equation

9. where's john

10. 1:04

11. Frick online school

12. My teacher likes to tell us, "This is not Math, it's physics okay,"

    Um, teacher, 7:28

13. One of the best things I learnt from these videos (including Physics, of course) is that I've been pronouncing the names of most of the scientists wrong!

14. I found this video a useful refresher of stuff I learnt some time ago. But I expect the presentation to be way too fast for someone encountering these ideas for the first time. Try slowing it down, guys.

15. ETS gang

16. Force (physics) does not exist physically in the same way that an object with mass, thus making it “not” the initial cause of pushing, pulling, shaping objects, motion, work or being a Vector Quantity (Magnitude + Direction).

    In physics, the word, “Force” as we know it, turns out to be nothing more than an expression to express an idea like one would use the word “Love” to express one's feelings. But, physics and in mathematics, still use “Force” as thou it were something physical that could enable the initial cause of motion is wrong making it counterintuitive.

    History teaches us that change is always constant. Here is my challenge to anyone. Without applying the Energy from within you, choose an object of your choices that is in front of you and try pushing and pulling it by simply applying “only” the Force or Net Force. Remember, no energy.

    Meaning that Energy (applied energy) is the origin of motion and not “Force”. Once Energy (E) is applied, it creates what is known as Momentum (p). When this Momentum (mass and velocity) comes in contact with another object(s), it makes a surface contact that will enable you to push and pull. Example: Ep=ma, Ep=mv and so on. Note: Ep is not to be confused as Kinetic Energy in any way.

    Momentum represents things like work, wave, gravity, light, lightning, tsunami, earthquake, current, electricity, motion, magnetism, hurricane, etc.

    Also note, that it’s “not” the size of a planet, but the amount of energy (E) being applied from within the planet that creates a strong or weak gravity. Example: A black hole the size of a marble can engulf or destroy our sun.

    Without Energy, there is no Momentum. Without Momentum, there is no surface contact on an object(s) to push, pull, work, shaping objects, motion, gravity, etc. Momentum does not and cannot exist without the applied Energy that creates it. Energy and Momentum or “Ep” is the only common denominator that links all fundamental forces of nature. Without Ep, all fundamental forces of nature would be inert and non-existence.

    Energy is energy, but it’s when Energy (E) is being applied that creates the Momentum (p) making it the initial cause of motion. Example: Ep.
    By applying the right amount of Energy, nothing is immovable or unstoppable. ~ Guadalupe Guerra

17. I believe it is possible that gravity really is a force produced by quantum level particles. Yes, GR produces accurate "gravity" but I believe GR is more like a mathematical regression fit. Meaning, if you assume space & time are flexible and mass can alter space & time, then, you can develop an equation to produce the same acceleration as "gravity".

18. U have explained all this in about 20-40mins and this took my school 3 weeks to the same stuff

19. Assholes like Sir Isaac Newton is the reason why we gotta go to school. 😠

20. Kepler's Law – Pizza slices of different pizzas taste good and are of the same size.

21. I get everything I also get f=ma but I don't get the math😔✌️

22. They can't explain how he made up that number that's why is considered a fundamental constant with the biggest percentage of error… Cuz actually could be any number cuz without that number many equations while not make sense. Like max plank equations…cuz for calculate you have isolated two obejct and that impossible here on Earth and an all scientific community knows that…

23. Had to watch this like 10 times…you speak too fast.

24. I see Newton is in agreement at the end of the vid, by was of SHM ! (Perhaps lightly damped !)

25. I am so dumb> 🙁

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