Pinewood Freak

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Definitions

Rotational inertia

January 4th, 2006 · No Comments

Inertia is the what keeps moving things moving and sitting things sitting. Have you noticed that if you’re pulling a heavy wagon or cart it’s hard to get it going at first but then it doesn’t take much effort to keep it moving? That’s inertia. Changing the movement of something takes energy. The heavier it […]

Center of Gravity

December 9th, 2005 · Comments Off

The center of gravity is the balance point of the car. Think of the car in three dimensions. If you found the one spot inside the body of the car somewhere that you could magically balance the car on that point no matter which way the car was sitting, no matter which end of the […]