Tuesday, April 28, 2009

Weightlessness


Great fun! It's amazing that I went jumping off a waterfall right after we talked about weightlessness. Even though this does not show the same type of weightlessness as the orbiting space vehicle, it does show something that is similar. When I jump off the edge of the waterfall, I don't have weight as I am not at equilibrium with gravity. It is quite amazing to think that an airplane can demonstrate the same feeling one would feel in space without weight. The orbiting space vehicle works as when it gets to it's apex and starts to descend, the passengers are basically at freefall. Everyone has experienced freefall and weightlessness, when flying on an airplane. When the airplane flies through turbulance, the slight drops felt by your stomach shows that weightlessness is occurring. It is fun to actually be in a weightlessness activity and know what is really going on! Physics is cool....

Sunday, April 5, 2009

Canada Physics


While I was skimming some absolutely amazing pictures of past vacations to our house on Hornby Island, British Columbia, Canada, I noticed a very very small piece of physics. In this picture, on the right side of the glass door, there is a flower pot hanging from the roof. In this small but legit example you can see the pot balancing perfectly similar to the rulers in our past lab, "Seesaw Physics." If one of the strings, balancing the pot, were longer the pot would be leaning one way or another. Also, speaking of the door, we learned that in a door there are two points of rotation. One is in the center of the door knob while the other is at the hinge. The door knob is located toward the side of the door, on the left because if it was in the center of the door then it would difficult for the door to open as where you would pull the door is in the center of the majority of the mass. See everybody...Canada has physics too!