College Physics 1: Lecture 22 - Apparent Forces, Orbits, and Gravity

In this lecture, we expand our discussion of circular motion to discuss fascinating scenarios that include your sense of weight changing because of circular motion, orbits, and Newton's Law of Gravity.

0:00 Centrifugal "Force"
4:09 Apparent Weight
10:59 Example 1
16:04 Example 2
29:45 Orbits and Gravity
34:24 Example 3

[thekid]

These videos are very helpful. Just a question: the last calculation, in Example 3. The answer isn't 7.18x10^-7 N, is it? I get the answer 1.12723x10^-6 N. This is driving me a bit crazy. There's a mistake (the first in 22 videos, so no problem!) at the very end of this video's final calculation? Or have I made a mistake?

[cenatation]

36:20 How did you get that answer? I have input the same numbers over and over and continuously get 1.13x10^-6, not 7.8x10^-7

[blissfulmeow]

Is this the last part of College Physics 1 or are there more lessons?

[allyc]

Thank you king for helping me not fail physics, please do unit 3 :)

[SippyKapur]

Why do you always say speed even when are referring to velocity?

[matteogarbarino]

Hi! Did you record the university physics (with calculus) lessons? Where can I find them? Thanks

[StephenPheenixx]

Most people call it the axis where normal and weight force to in the y-direction.