Forces And Weights Investigation Using Trolleys And free essay sample

Ticker-Tape Essay, Research Paper Planning: To execute this experiment, we will work in braces each taking a certain figure of consequences and so seting them together. Puting up the setup will be one of the hardest parts of the experiment. The first thing we will make, is set our board a T an slope carefully adjusted so that no force will alter the velocity of our streetcar, intending one time its traveling, it keeps traveling. This will be setup utilizing a few books. After that is done, we will infix a block at the terminal of the tabular array to do certain that the experiment works swimmingly. Then, we will take a power adapter to power our heart timer dispenser. We will link them utilizing stoppers and, when the clip is right, power it to do it work. We will so cut a piece of yarn about the length between the land and the tabular array, plus the length between the terminal of the tabular array and the beginning of our board. We will write a custom essay sample on Forces And Weights Investigation Using Trolleys And or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page To this twine, we shall attach different weights as our experiment goes on. We will so cut some self-marking heart timer paper and topographic point in the heart timer machine. Then, we shall attach the twine to the streetcar on the forepart, and the heart timer paper at the dorsum. We will so, be ready. Except for one thing, our safety. We have to do certain that we are safe in every manner and that no injury could perchance come to us. We must be careful non to put our pess next to the falling weights and non to lodge our fingers in the electric sockets. After we are certain that everything is safe, we will be able to get down. We will take a weight, say 100 gms, we shall enter that weight, and so we shall at the same time turn on the electricity and allow travel of the streetcar with the weights attached onto the terminal. Once the streetcar has bounced back on the elastic set, we shall turn off the electricity and take the heart timer paper ( t.t.p. ) for farther record. We so, shall alter the weight and get down afresh. We shall put some new t.t.p. in the t.t.p. machine and recommence what we have merely done. We shall reiterate this process several times altering the weights, doing certain that our safety come foremost. Obtaining grounds: We will do certain to enter adequate consequences to do an accurate and definite decision. We will maintain a record of consequences by spliting our heart timer paper in 1/10 of 2nd strips that will lodge on graph paper as a graph demoing the addition ( or lessening ) in the velocity of our streetcar. This method of entering our consequences should be really clear as we will non be making excessively much authorship. If our consequences vary, or we lose our consequences so I will remake the experiment. We will hold to do certain to enter consequences in a safe manner as our safety comes foremost. We will do certain non to acquire in the manner if electric currents and our consequences will hold to be analysed in a safe environment. The equipment we will utilize will enter the consequences every bit accurately as is possible. It makes 50 points per second and I don # 8217 ; t believe that with our limited financess we could get a machine that is more accurate. Therefore, our consequences, machine wise, will be of the extreme truth. It is human mistake that will determine failure in truth. Therefore, we will be every bit careful as possible to do certain that we do non enforce an mistake into the experiment. Our consequences will be made over a really broad scope. We will mensurate out 100, 200, 300, 400, and 500 gms in the weights to perform our experiments. This should ensure a wide range of results that will help our conclusion be accurate. To record our results, we will make graphs (as seen in evaluating evidence) of averagely 1/10 of a second in between all of our records. We cannot effectively make a table to show our results, a graph is the only real way, apart from writing about it. I will repeat some results if I am not satisfied with a certain one (or if I lose it). The main point I am trying to emphasise is that we will have to have enough results over a wide enough range to draw a firm and accurate conclusion. Safety is still an important key thing in this whole experiment but in the end, it is the results that count. Analysing evidence and drawing conclusions: From the graphs we saw that the heavier the weight attached to the end of the trolley, the faster it went, and thus the larger the graphs became. The four hundred gram graph speed went up to 165 when the 100 gram graph went up to 120. As w e see from the acceleration, the trolley pulled by 100 grams went 122.22cm/s/s. The trolley pulled by the 200 grams went 130cm/s/s and the trolley pulled by the 400 grams went 168.75cm/s/s. This definitely shows an increase in the acceleration of the trolley. That is basically what we have discovered. We have displayed our results in the above charts. The patterns are quite distinguished, there is no mistaking, they are all on the rise. My conclusion is that, the more weight pushed, or pulled, on an object (for example the trolley), the more force exerted on the object in a certain direction. Therefore, if the string has more weight on the end, then a greater force will be pulling the trolley with little friction to stop. The force is important in a moving object but the friction is also of great importance. If the ground is rough, then it will move with less ease. If it is smooth, then the object will go further. The previous scientific knowledge I had was a very obvious one. I, ob viously knew, that if a greater weight was added, then the trolley would go faster. This is common sense to practically everyone in this world today. Evaluating Evidence: This experiment was far from flawless. I made many (human) errors. On on of the graphs, I measured 7 dots out instead of 5. This was a mistake that I could have avoided if I simply had put more time into doing my graph. Also, I lost the first set of my t.t.ps. I had to redo them all, in about 5 minutes. I had to run to get my apparatus set up. Do the three experiments, then run to clean everything set up. This still made me receive good results, however, as the t.t.p. machine works perfectly if properly operated. My graphs were about as comprehensive as I could make them, which wasn’t very, and I got a little confused when I had to work out my acceleration and I probably have some inaccurate results in that area. Otherwise, everything went fine. There were, of course, minor glitches that didn’t really affect the actual turnout of the experiment. Like, for example, the fact that I ran out of pages in my book so I had to rip them out. This has nothing to do with the experiment, but in the end, affects really only the morale of the person doing the experiment. If that person is discouraged, then the outcome of the experiment may not be as good as the person won’t have set his/her heart into it.