Last night I went to my great grandma's 99th birthday party. It was so much fun because family that I had never met came from the mainland to celebrate with us. We also played a couple of super fun creative games that my uncle prepared for us. One of them reminded me of what we are learning in Physics right now. In this game, we had to pick one person from our table to be dressed up like a reindeer in the most unusual way. At the end, my great grandma would judge who was the best reindeer, and the person she picked, would win. In order to make the antlers, you had to stuff panty hose with balloons. The person who dressed up from our table was my sister. However, we did not use up our balloons the first time because we didn't think they would all fit. But after comparing her to the other "reindeer" we decided to put them all in...except we had the hardest time taking the nylon off her head because the nylon and balloons kept sticking to her hair! This is a result of the attraction that was occuring due to an imbalance of charge caused by friction. After rubbing all the different balloons and the nylon together, the balloons and nylon both had a charge because they either gained or lost electrons. When there is an imbalance, the object attempts to gain neutrality again by attatching to something neutral so share/gain back electrons. Since her hair was still neutral, when we tried to pull off the nylon, it was attracted to her extremely long hair which made it hard to take off.
January 25, 2009
January 4, 2009
PADDLING :)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgO_I0_uqn_OHBD7yzgyQZl831eA5C4voUBZ8d4s5I0Yuy71kSoyPDJXwhvbh4dlmJNbM4TapRSsWVCcC67J_1WYeN-lbZwkVTmQN0Q5xPPqbEBUNxkgl4Igtivrquu1LaeZlB95Nz6qQQ/s320/47b9df22b3127cce98548ad23f1400000046100AZNWLFizctGRA%5B1%5D.jpg)
This past weekend we had our second paddling race of the season. The race was about three miles long and we paddled through some crazy wind! But, we were successful and we came in third after Punahou and Kamehameha. After the race, I was looking at my paddle when I realized it had physics in it!! When you take a stroke through the water, the lever arm is the length of your arm and the rotation point is your shoulder. As you twist to take a stroke, you are creating a torque when you push down with your top hand. Therefore, if you have a longer arm, then your lever arm is longer and you can pull more water. This is probably why my coach always tells us to twist our bodies out as far as possible and to reach out as far as we can in order to maximize the lever arm. This comes in handy especially upwind when you want your boat to move forward against the wind.
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