In Unit one, we covered accuracy, precision, the metric system, graphing, scientific notation, dimensional analysis, qualitative and quantitative observations, and pendulums, periods, and made various lab hypotheses. I chose to write about the pendulum lab because I liked that section the most.
In this experiment, we tested the effect of string length, angle of drop, and mass of object on the length of 5 periods. I hypothesized that all of these factors would cause the period length to increase.
However, our experiment data shows that mass of the object on the end of the pendulum and the angle of drop has no effect on the length of the period, although string length and angle of drop both increase period size.
The person on the swing is like a pendulum. It does not matter how heavy the person is on the swing; the period length will stay the same if the angle and length of chain holding the swing up remains constant.
If people were swinging on two different swing sets of different heights, then the person on the higher swingset would have a longer period.
In this experiment, we tested the effect of string length, angle of drop, and mass of object on the length of 5 periods. I hypothesized that all of these factors would cause the period length to increase.
However, our experiment data shows that mass of the object on the end of the pendulum and the angle of drop has no effect on the length of the period, although string length and angle of drop both increase period size.
The person on the swing is like a pendulum. It does not matter how heavy the person is on the swing; the period length will stay the same if the angle and length of chain holding the swing up remains constant.
If people were swinging on two different swing sets of different heights, then the person on the higher swingset would have a longer period.
Jess that was really smart to think of a swing as a pendulum and comparing it to all the stuff we learned through our lab.
ReplyDeleteI like this idea! It's really funny because i've seen swings that have a short swing with a chair for babies on it and then a longer swing for older kids right next to it, so now i know that the longer the pendulum, the longer the period there is to swing! Doing the pendulum labs in class were really fun, so i understand why you'd write about this! Cute picture by the way!
ReplyDelete@bLyon: Thanks! Although we did use a swing in our lab so it wasn't really creative...
ReplyDelete@ nalei: Yeah...I never really thought of that haha thanks :)
I think the fourth paragraph is wrong. The only variable that we tested that affected the length of a period was the length of the pendulum.
ReplyDeleteThanks Corey!
ReplyDelete