Posted by: Hannah Aaron to Sciences » AP Physics » Videos » Centripital Motion and Universal Gravitation
This is a video that gives a quick explanation of universal gravitation, as well as a couple practice problems. Excuse my sickly voice. Note: The radius of Earth should have been squared at 7:13.
Score: 50Sue Choi says: I chose to watch this video to get a review of what we learned in class yesterday because I didn't really understand it. Going through every step was helpful, and I got to truly understand why we multiply the mass of the object by 9.8 m/s/s to find the weight of the object. Also, it was cool that we could use the Earth's "numbers" to find gravitational force on other planets.
Will Mason Moses says: Good job