Tuesday, February 17, 2009

Los Angeles Times Lobby Physics


This is a picture that I took in the lobby of the Los Angeles Times, where the huge centerpiece of the art deco design is the huge globe in the middle of the room. This miniature earth demonstrates several things about physics. Both objects are pulling against each other. The actual earth is pulling the globe down, and that accoutns for the gravity holding the earth down. However, the design globe is pulling the earth up as well. However, the force of the globe pulling up on the earth is so little, that we don't see anything dramatic happening. In fact almost nothing happens at all.

Sunday, February 8, 2009

Bow and Arrow

This is a photo that I took a few weeks ago of my brother shooting a bow and arrow in our backyard. Mind you, he made that bow himself by taking a branch off a tree and carving it. He may not go to private school, but talented kind nonetheless. The arrow being shot off obviously has force from the bow being applied to it. We can assume that xN are pushing it towards wherever it is heading and the only resistance it is facing is from the air and wind (would this be considered friction?). The arrow being shot is also not in free fall, though if it were, it would be falling at a rate of 9.8m/s^2.