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Category Archives: Physics
One app I've always wanted to do was an n-body gravity simulator. Having recently discovered the <canvas> tag, I decided to whip up a quick naive simulator (won't work in IE, although this looks promising.):
#statistics {
padding: [...]
A block on a sphere
29-Jun-06There is a fairly common problem in elementary physics class that goes something like this:
A small block slides from rest from the top of a frictionless sphere. How far below the top does it lose contact with the sphere? The sphere does not move.
—paraphrased from problem 4.6 of An Introduction to Mechanics by Kleppner/Kolenkow
It’s fairly […]
Torricelli’s Equation
21-Jun-06I was reminded recently of a useful kinematics equation usually learned in high-school physics:
Strangely enough, it seems that not many people recognize this equation—apparently sometimes known as Torricelli’s equation—as conservation of mechanical energy in disguise. Even the Wikipedia articles mentioning it don’t make the connection.
Starting with conservation of mechanical energy with T and U […]
I love Half-Price Books!
26-Nov-05Ever since I discovered Half Price Books I’ve been digging through all the stores in my area hoping to find this:
Gravitation probably one of the most massive physics textbooks out there and I’ve always wanted it although I could never justify it to myself to buy it. But last night I was browsing through […]