We know that gravity must cause clocks to run slow on the basis of logical consistency. And we know that gravity DOES cause clocks to run slow based on many brilliant experiments. But I never explained WHY or HOW gravity causes the flow...

Exponentiating matrices, and the kinds of linear differential equations this solves.

This video recounts a lecture by Richard Feynman giving an elementary demonstration of why planets orbit in ellipses. See the excellent book by Judith and David Goodstein, "Feynman's lost lecture”, for the full story behind this...

Check out Grant’s channel: 3blue1brown.



This video recounts a lecture by Richard Feynman giving an elementary demonstration of why planets orbit in ellipses. See the excellent book by Judith and David Goodstein,...

This video recounts a lecture by Richard Feynman giving an elementary demonstration of why planets orbit in ellipses. See the excellent book by Judith and David Goodstein, "Feynman's lost lecture”, for the full story behind this lecture,...

In this video Paul Andersen explains how a charge particle will experience a magnetic force when it is moving through a magnetic field. The right-hand rule is described as a method for determining the direction of the force. The...

Understand the physics of uniform circular motion, its requirements, and key formulas like centripetal acceleration. Learn real-world examples, distinctions from non-uniform motion, and the derivation of UCM equations

Learn the basics of vector physics, including how to add vectors and interpret their graphical representation. Understand the difference between scalar and vector quantities with real-world examples.

If you're given the parametric equations describing the path of a particle. How do you find out the accelerations in the normal and tangential direction? Find the velocity and you know the tangential direction. Find the acceleration and...

I derive the formula for Kinetic Energy and show that the total work done by all the forces acting on an object = 0.5 m (V2^2 - V1^2)

To solve for the velocity of a point A moving relative to an object that is rotating then we can use the relative velocity (for rotating reference frames) equation:<b<br/>r/>

Va = Vb + Vrel + Vp/b

Circular Motion proof

What is the magnitude of the acceleration of a ball traveling around a circular path if it's constrained to have a constant vertical velocity? Always start these problems by doing a velocity analysis, then finish it by doing an...

In this video I cover some of the main formulas used for a standard dynamics course:

1) Plane m
otion
2) Project
ile motion
3)
Circular motion
4) Dry Friction
(static and dynamic)
5) Relative motion (for no
n...

A simple problem using the equation derived in my previous video: at = r alpha and an = v^2/r

What is the equation of motion of a particle that has a drag force acting on it? It's important to note that we've assumed that the drag force is proportional to the velocity at all times. In reality, other factors are involved too like...

Here I derive the most generic equations of motion (position, velocity & acceleration) for a continuous curve. The calculus is pretty involved so I definitely recommend you hit up your math textbook first!

This is a very basic introductory to Tip-to-Tail Vector Addition Problem using a motorized toy car that I made. I don't just talk about it in a general sense, I actually show the different vectors being added together.

The relative velocity equation for a object with rotating reference axes is:



Va = Vb + V

rel + Vp/b

This problem can be solved graphically by calculating lengths of the triangle that forms these vectors, or...

Your buddy Max is always attempting crazy stunts! Remember that time, he dove off the tree into the kiddie pool? Well this time he's going to take his motorcycle over a brick wall. Since you know all about projectile motion, and you know...

mechanical energy problem 1

Here we solve for the speed of a plane using polar coordinate formulas.

Things don't always move in one dimension, they can also move in two dimensions. And three as well, but slow down buster! Let's do two dimensions first. You know, like a cannonball. Isn't this getting fun?

"Science of NFL Football" is a 10-part video series funded by the National Science Foundation and produced in partnership with the National Football League. In this segment, NBC's Lester Holt looks at the science of projectile motion...