Physics of dynamic braking in slow motion

Posted to Misc. Visualization  |  Tags: , ,  |  Nathan Yau

When you slow down your car, energy dissipates into the air as heat. What if your car could instead make use of that energy? Your car could run that much more efficiently and get more miles per gallon. GE explains such a system called dynamic braking (video below).

Energy: you can’t destroy it, but you can certainly waste it. That’s what most motorized vehicles do, including trains. Usually, the energy generated when you stop a moving vehicle is dissipated as heat, and is lost to the atmosphere. With GE’s ecomagination we’ve discovered that you can capture and store that energy, then reuse it – that’s how our hybrid systems work. Watch the video to see a simple illustration of the physics behind dynamic braking. Keep in mind an object’s force is measured in Newtons, using the equation “force = mass * acceleration.”

Objects are dropped on a blob-like substance at first. Energy is absorbed. Then objects are dropped without absorption with different results. Update: I suspect the creators behind the video didn’t have a complete understanding behind the math and mechanics, unfortunately, so it’s best to ignore the numbers and just watch stuff fall.

Is it bad that all I could think about was Andy Samberg throwing it on the ground?

[Dynamic Braking | Thanks, Jeff]

14 Comments

Favorites

Graphical perception – learn the fundamentals first

Before you dive into the advanced stuff – like just about everything in your life – you have to learn the fundamentals before you know when you can break the rules.

Pizza Place Geography

Most of the major pizza chains are within a 5-mile radius of where I live, so I have my pick, …

The Changing American Diet

See what we ate on an average day, for the past several decades.

How You Will Die

So far we’ve seen when you will die and how other people tend to die. Now let’s put the two together to see how and when you will die, given your sex, race, and age.