This includes Chapter 9 Circular Motion AND Chapter 10 Center of Gravity AND Chapter 11 Rotational Mechanics

​
Rotation Lecture Video:​
What happens when the person buying the cable doesn't understand

​that forces are SUMMATIVE! And listen to the announcer, he is

incorrect in his physics as well.  Sit back and learn some physics:



Conservation of angular momentum:



​​Start at the 2 minute mark to get to the actual question:



​Stop at 2:25 and see if you can calculate the velocity yourself:

What id the Earth were hollow?

​


This Guy can balance anything...using its Center of Gravity: