A day that will go down in famy!

Remember today, September 24, 2007, During Period 1 at approximately 9:46 - 10:27 a.m., I Kevin Jing Cheung Paul Maximillien Kolbe Duong achieved the formerly impossible....


I made Doc laugh.


=0



Why can geckos fall from the ceiling at hit the ground unharmed?
Because they have life insurance from Geico.

That's why.

When pigs fly...

Well when I was cruisin about the mall last week, I saw one of them flying pigs toys at Jungle Fun. It was the kind where the pig would flap its wings and fly around in circles connected to the ceiling by a string. Now being a budding physicist, I took a moment to think about the forces behind the pig. First of all, I tried to draw a free body diagram and it turned out the the pig required a 3-D FBD. Tension was applied by the string and its weight went straight downwards, however foreward acceleration due to the flapping wings kept this pig moving in a constant circle. I also assumed that centrifigul force kept the pig moving in a perfect circle. If there was no gravity, then the pig would move in a perfect circle on the same plane as its connection to the ceiling. But because the world sucks, it is pulled to the ground and forms a smaller circle.

* Note: Due to some technical difficulties with my phone, I could not put on the original picture, but instead is a similar flying pig with a FBD on it!

Elevator Fun!

woot! So riding up and down elevators was pretty fun, especially at my Mom's office Building! I tried explaining to her what she was feeling when she rode it. So the normal feeling that one gets from standing in one place is an upward force. This is the normal force that counters the earth's gravitational pull on you. These forces are balanced because if gravity was lower, than you'd start floating away. If your normal force was lower, then you'd start sinking into the ground. But they are balanced and you stay stuck to the earth because THE WORLD SUCKS! But anyway, in an elevator, things change a bit, as anyone who's ever ridden an elevator can tell you. When you start going up to, let's say the 30'th story of a building, you feel heavier at the beginning. This is because the elevator is accelerating upward so your normal force decreases. Therefore it appears as if gravity is stronger and you are heavier, when in fact, your normal force has changed, not gravity. This is probably similar to when you are in an airplane at take off. The plane goes forward, but because your body naturally resists change (not like when you try to wake up in the morning) you feel the drag or the force pushing backwards. Between, oh let's say the 3rd and 27th floor, you feel regular. This is because you are not accelerating, but merely moving at a constant velocity. However, as you slow down and reach the top of your trip, the elevator car slows down and you feel lighter. This is because the car works with gravity and your normal force is suddenly higher than gravity and the elevator. So that is why you suddenly feel lighter.

oooopppsss

okay so that last post was too short so lets just add this on to it:

I'm really looking forward to these new topics like electricity, and force and waves. They sound really cool, but I'm just afraid of not being able to measure up the right measuring stick. I really hope that I get better and start to understand these topics a bit more.

1st Journal... what to write?

Survived? Ha! I'm rather dissapointed at how horribly I'm doing. I mean I really want to learn, but some of the stuff I just don't get! I mean I think that physics is sooooo cool and that it can be really interesting, but I think my own ineptitude is holding back my drive to learn. I know you have to learn about the small stuff to get to learn the big stuff, but I worked hard to get here! I could have easily not worked hard and went to an easier class, but I wanted to learn physics in the future and so I worked my butt off to get here. I know I didn't do so good... BUT I WILL DO BETTER!!!!! That's a Promise to Myself!