Cline+Group+2

Cline-Bella

Claim- does the length of the string,weight on the end of the string,or the angle of the drop effect a pendulum's range in swings the most in 15 seconds? Evidence- The length of the string made the most effect on the experiment.The weight on the end of the string and the angle of the drop, did not have an effect on the experiment.On the length on the end of the string group, I noticed that as the centimeters got bigger, the averages got smaller. On the number of washers group,they got all twelves for their averages.On the angle of drop group, all they got was twelves and elevens. Reasoning- I think that the string was the variable that caused the greatest effect because on the data table, it shows a lot more numbers than the other data tables of the different variables. The number of washers had only five different numbers. also the angle of the drop data table had only three numbers.

Madeline

Does the length of the string, weight on the end of the string, or the angle of the drop affect a pendulum's range in swings the most in 15 seconds? During the experiment the mass on the end of the string and the angle didn't affect anything, though the length of the string did. The shorter the string the more swings. The 10-100 cm. string's range of swings was 17-7. On the number of washers the only number of swings was 12. The angle of the drop was only one number of swings as well, the number was 11. During the experiment I observed that quite a few times the descending and ascending pendulum would hit the desk. This happened in each of the tests. I think that you have to measure accurately, otherwise your experiment will get messed up. The length of the string affects the experiment because with 10 cm., the string has less distance to get around in a full rotation, so it takes less time. When the string is longer, the distance to travel in the rotation is greater and so it takes more time. In this experiment, the number of rotations within 15 seconds is the dependent variable. The mass at the end of the string and the length of string or angle of the drop are independent variables. Sarah Denny Claim Problem- Does the length of the string, weight on the end of the string, or the angle of the drop affect a pendulums range in swings the most in 15 seconds. Answer- In the experiment the length of the string was the only test of 3 tests that has different answers in averages and the testing. The longer the string, the most amount of time it will take for the washer on the end of the string to complete a lap. So in all it turns out that the length of the string is the answer of the experiment, because what the question is asking is which test of three tests has different answers for the amount of seconds it takes for the washer on the end of the string to complete a lap in 15 seconds. Evidence For the adding washer’s test the averages are the same thing; for example: the answers/averages are 11, 11, 11 and 11. For the angle of the drop is also 11, 11, 11 and 11. So the only test left is the length of the string. That test has different averages/answers. For example: the averages are 17, 15, 12, 12, 9, 8, 8, 8, 7 and 7. Those are all different. So the length of the string is the answer. My group and I (the amount of washers) started to just see 11, 11, 11, and 11. We knew that the amount of washers was not going to be the answer to this experiment. Reasoning I think the length of the string had the least/most cycles. Are group thought that because the longer the string the longer it will take for the washer at the end of the string to complete a lap, and the shorter the string the shorter amount of time to complete a lap. The string stays on one path; it’s kind of like a dog running lots of laps. The dog gets slower when he runs more. That’s why for 10cm the washer goes faster by completing a lap because the string is not so long. Zafir Claim  Problem:Does the length of the string, weight on the end of the string, or the angle of the drop effect a pendulums range in swings the most in 15 seconds? Answer: As the length of the string increases the amount of cycles decreases. Finish:The length of the string was the only variable that affected the range of the pendulums cycles. Evidence:  Our first test's independent variable was the length of the string and they tested from a 100 cm. string to a 10 cm. string, and the range of the averages was 10, 17 to 7.Our second test's independent variable was the number of washers on the end of the string,we went from 1 washer up to 5,and the range of the averages was 0, because it was 12 cycles every time.The third test's independent variable was the angle of the drop, and they went from 10 degrees to 90 degrees but again the range of the average stayed the same.The number of washers on the end of the string,and the angle of the drop had no effect on the range of the pendulums swings. Reasoning:  I believe that the reason the length of the string made a difference is because the longer the string became the more time it took to complete a full cycle.Another reason is because the longer the string became the more distance it had to travel.I feel the reason that the angle of the drop and the number of washers on the end of the string did not have an effect because they had nothing to do with distance and time.