![]() Write down all the numbers you measure, including control variables like temperature (which should be kept constant). Once you have designed a good experiment, you need to perform it!ĭata recording is all about keeping structure. Return to step 1 and try to find something else! If you find that you don’t have the equipment necessary to perform your experiment, your topic might be too complicated. Try to also make it clear at this stage what exactly the data you record will be, and how you will record it. If you need special arrangements, it might be harder to perform the experiment well. While it is nice to be creative, try to design your setup should be such that the experiment can be done in a normal classroom or at your school. At this stage it could therefore be useful to write down a plan for how you will set up your experiment, including as many details as you possibly can.įor example, for the intensity vs distance experiment mentioned above, you would need a light source, an intensity measurement device such as a photometer, and a bench long enough that you could get measurements for a large range of distances. It is important that whatever topic you choose, you have the equipment necessary to perform the given experiment. If you’re stuck, consider checking out our list of 35 Physics IA Ideas: Simple and Score High Marks right here at IB Better! Your job is simply to test whether this relation holds true! An example would be testing how the intensity of light from a source varies with distance away from that source, which is governed by the equation I=P/4πr^2. The investigation should be experimental, so ideally there should already be an equation relating the two quantities. So remember to try and keep it simple – simpler topics are easier to handle well and therefore usually score higher marks. Your goal should be to find a topic where you can test the relationship between only two variables while keeping everything else constant. Perhaps you have even spotted some links between different phenomena? Try to think about whether there is anything you have covered in class that you found enjoyable and would like to investigate further. Finding a good topic is about so much more than this aspect.Ī good starting point is to look through the syllabus. Remember, however, that this only counts for 8 % of your grade, and that there are also plenty of opportunities to show personal engagement in other ways (more on that later). Many students get caught up in the “personal engagement” part of the assessment, and think they need to find something that is somehow relevant to their personal life in order to score highly. Your choice of topic can make or break your investigation – so make sure you spend plenty of time thinking it over. This is the first and perhaps also the most important decision to make about your IA. If you’re interested in getting additional support for your Physics IA, we have a team of expert IB Physics tutors that can help you plan, structure and execute your assignment. Therefore, we have compiled this guide of all the most important steps to take when doing your IA, from beginning to end.īefore we start, make sure to download our PDF guide for writing a physics IA. This is not a simple task, and we at IB Better want to help you through it. The peg sticks out of the cylinder up near the top.The Ultimate IB Physics IA Guide: Everything you need to knowĮvery year thousands of students around the world are asked to perform an independent physics experiment and write up a report as part of their Diploma Programme. ![]() Or, you can click the "R=." button at the top. (If you do not have 10 data points in this region, repeat your trial.) Highlight only the linear portion if there is a nonlinearity near the beginning or end for some reason. If the data collection times out too early, go to "Experiment->Data Collection," and increase the duration of the trials as necessary. The frictional torque will result in some angular acceleration \(\alpha_\) and \(m\) (which is, in general, a hard issue). In the first part of this lab, we will have two torques: a frictional torque (which will slow the wheel's spinning) and a "pulling torque" resulting from a hanging mass \(m\). In particular, for a disk of mass \(M\) and radius \(R\), we find: The "moment of inertia" (the analogue of "mass" for rotational motion) is \(m\langle r^2\rangle\), where \(\langle\ldots\rangle\) denotes the average. They are mostly analogous to linear motion, with a few subtleties. This lab reviews many concepts from angular motion, with which you should be familiar. ![]()
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