Top Notch Gravitation Khan Academy

A little bit on gravity.

Gravitation khan academy. Gravitational fields and acceleration due to gravity. What are thrust and pressure. Our mission is to provide a free world-class education to anyone anywhere.

A little bit more on gravity. Module 0 An Introduction. Module 2 1D Kinematics Graphing Motion.

Basics of gravity and the Law of Universal Gravitation. In this video David gives some problem solving strategies for centripetal force problems and explains many common misconceptions people have about centripeta. Module 4 Newtons Laws.

Well thats exactly what we will explore in this video. Opens a modal Visual understanding of centripetal acceleration formula. Most physics books will tell you that the acceleration due to gravity near the surface of the earth is 981 ms2 and this is an approximation and what I want to do in this video is figure out if this is the value we get when we actually use Newtons law of universal gravitation and that tells us that the force of gravity between two objects and lets just talk about the magnitude of the force.

When you look at footage or photographs of astronauts in space it doesnt look like theres any gravity at work here the everything is not falling and down in one direction in fact its not even clear what up or down is everything just floats around if I were to push off of this wall I would just float in that direction so it does it look like theres this theres this overarching influence. Created by Sal KhanWatch the next lesson. Module 6 Conservation of Energy Momentum.

Created by Sal KhanWatch the next lesson. Opens a modal Centripetal force and acceleration intuition. Learn how to calculate gravitational potential energy when we can no longer assume the gravitational field is uniformView more lessons or practice this subj.