# Blog daboss9

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## Entries in this blog

March is here and along with it comes warm weather and basketball. I thought that a good way to celebrate it would be to put up my basketball hoop. I went to put it up in my lawn (i have it facing the street cause no one ever comes driving down my street) and left it balenced so i could get the sandbags toput on the base. However, the hoop wouldnt stay up. The center of mass isn't the center of the base because it isn't symetrical. So, i placed a shovel on the base to provide enough tourqe

## Use for Capacitors

So today I was bored and my family had just gotten a new computer, so that means that the old one was just laying around. So i started to take it apart, just to see what was inside. What astounded me was the sheer number of capacitors that was inside the machine. They were all over all of the chips, some in a line, others by themselves. Doing what anyone else would have done, i started to take them off (not as hard as i thought it was gonna be) and put them in a small tuperware. After I was

## Harrison Barnes (part two)

http://espn.go.com/video/clip?id=espn:7309828 Heres part two of the breakdown of Barnes. Now, it's time to figure out how fast he can acclerate toward the hoop. In the dunk shown in the clip, Barnes takes off with a force of 1000+ pounds. For this case, we'll say just one thousand pounds, which is roughly 250 newtons. Since he weighs about 95 kilograms (210 pounds), he accerates at rate of 2.63 m/s/s (using f=ma). Thats explosive. Yet another reason why if his knees don't betray him,

## Breakin some ankles with rotational motion

Watch: http://espn.go.com/video/clip?id=espn:7309828 Harrison Barnes is most likely the #1 overall pick in whatever year he enters the draft. His ability to spin in circles is one of the reasons why. 720 degrees is equal to 12.57 radians. Assuming constant angular accleration, he is acclerating at 41.9 rad/s/s (it took him .3 sec to start to spin). But a good question to ask is why can't althletes who have had knee surgery (like the dreaded ACL/MCL surgery) do this. Well, assuming tha

## How can you make physics harder than it already is?

I'm sure that the title isn't going to attract many readers, but if your interested, I found a way. You simply gotta hear me talk about it in spanish. That was the task i undertook as a spanish project. I had to find a topic that I was currently learning about and talk about it in spanish. So, I chose simple vector addtition and away I went. The spanish was the hard part not the physics. Drawing los vectores with una escala isn't hard to describe. Showing how to draw a diagrama de fu

## The SAT Physics Subject Test

On Saturday, i subjected myself to torture. No, I wasn't watching swagmeister do pushups, I was taking the SAT Subject Test in physics. Overall, I thought it went well. There were only a few questions I stuggled with, but otherwise I was able to work my way through the problems. Electrostatics, which has always been a pain for me, wasn't that bad, although I think that's because I spent a good chunk of time reviewing that. Magnetism, however, was what I stuggled with. The concept of magn

## Sport Science: What they didn't cover

http://search.espn.go.com/sport-science-cromartie/ Before you read this post, visit the link above and watch the video. Now that you've watched it, that was pretty amazing huh? Now one thing that John didn't talk about was how "soft" Cromartie's hands are. A ball thrown 12 yards at 45 MPH doesn't have much time to slow down, so Cromartie must stop all of the 45 MPH ball's momentum. Now the mass of a football is .43 kg and 45 MPH is 20.25 m/s so the momentum is 8.7 kgm/s. Now, to stop t

## Wind Vectors

When the calendar hits November, distance runners know what time it is. Its time to get those last 5ks and 10ks in before the snow starts. Now ask a distance runner what part of the weather bothers them the most and most will say that its the wind. A wind at your back helps you, but that never happens. It seems like the wind is always in your face. To figure out if the wind is helping or hurting you, a simple vector anaysis can determine that (cause it can never be a wind from one of th

## The widow maker

Whats better for a halloween post than talking about THE WIDOW MAKER? Answer: nothing. THE WIDOW MAKER was the lethal killing machine that me, thatguy and [not] the brightest bulb built. With two springs as the power source (.5kx^2 turns into .5mv^2), no one wanted to be in the way of it (I salute Mr. F for standing out in the field to mark our spot). And it was powerful. Just a little too powerful as it was... Even we, the creators, underestimated it's power (not work/time power), and it

## Diffrence between Velocity and Speed

Being a baseball fan, October is perhaps one of the best months of the year cause on top of football (anyone see the end of Mich St- Wisconsin?) you got the World Series. Well Albert Pujols decided to put on a show in game 3, swatting 3 home runs, all of which were impressive. The 1st home run was a high inside pitch he nearly put in the 2nd deck, and it left everyone speechless. That got me thinking about how powerful major league hitters are. One of the more impressive stats is how fast

## Physics of a Push-up

Hey everybody hope you caught the 2 Game 5's on friday night (both of which were sick) and the the Bills picking Vick 4 times to win. The Pats also shut up Rex Ryan, so a good weekend all around (minus no Red Sox in the playoffs of course). One of the excerises all athletes do (yes even distance runners even though I wouldnt call Swagmeister's push-ups push-ups) is push-ups (ya kinda ruined the surprise there). But how does the push-up work? Well, 1st of all you are fighting gravity so tha

## Baseball and Bernouli

I hope everybody out there had a chance to watch the amazing finish to the MLB regular season this Wednesday night/ Thursday morning cause it was as good as baseball gets. Now being a Red Sox fan, i was very disapointed in results (come on Papelbon you couldnt get 1 more strike????). But this, combined with a WebAssign problem, got me thinking some physics (much more comforting than thinking about the Red Sox). Now the problem in question had the solver calculating how far a baseball fell f

## Luke Skywalker's Home Exists!

[ATTACH=CONFIG]171[/ATTACH]Yes, you read the title right. On Friday, NASA announced that a planet had been found, 200 million light years from Earth, that orbits 2 suns, like Luke Skywalker's own Tatooine (the planet was aptly named Tatooine). However, the planet is too cold and can't sustain life (explain that one to me). But what got me thinking is how the planet can orbit two suns at once. At some point in the orbit, both suns would be pulling on Tatooine with a force, whose magnitude c

## Its Football Time

As we all know, its two weeks into the NFL season (how bout the 2-0 (soon to be 2-1) Bills?) and watching two games of football has been fun. But it got me thinking about some of the physics of football. As we all know, defense is based on being able to tackle the offensive player before the move the ball down the field (there you go non-football fans i just explained the game to you), and the harder you hit, the better. But the NFL has been recently cracking down on certain hits, and for a g

## The best topic of all: me

running and sports are my life outside of school. i have a feeling tho that this website will become my second favorite site (espn cant be knocked from number one), but thats ok with me as physics is in sports all over the place. im just gonna warn everybody that most of my posts will be about sports. thats part of the reason i took ap-c, the other part being that since i hope to major in business, hopefully credit from ap-b and ap-c will help fullfill the basic science requirement i might have

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