![]() ![]() 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. Hanging Mass (kg) | Spring Length (meters) | Stretch Distance, x (meters) | Stretching Force, F (N)Ġ.1 | 6.4cm/0.064m | 0.064-0.039=0.025m | 0.98NĠ.2 | 10.4cm/0.104m | 0.104-0.039=0.065m | 1.96NĠ.3 | 14.2cm/0.142m | 0.142-0.039=0.103m | 2.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. Do not hang masses greater than 600 grams from the springs, or they may be permanently stretched out of shape. Important: The springs you are working with are quite delicate. The stretching force is just the weight (in Newtons) of the hanging mass. The stretch distance is the spring length minus the reading for zero added mass. Record your observations in the Table below.ģ. Choose a reference point somewhere near the bottom of the spring or masses from which to record the differences. ![]() Notice the resting position of the spring and record it first.Ģ. To determine the spring constant of the spring, hang masses from 100 to 600 grams, in 100-gram steps, on the spring. You can assume that the force applied on the spring by the hanging mass is proportional to the restoring force applied by the spring on the massĬalculation Ia: (1 pts) For each value of hanging mass on the spring, calculate the force applied 0n the spring:ġ. Question Ia: (1 pts) Based on your Graph 1a, can you conclude that the mass-spring system follows Hooke's law? Why or why not?Ĭalculation Ib: (2 pts) Using the slope of the linear regression in Graph 1a, calculate an experimental value for the spring constant and its uncertainty (using propagation oferror) for the conical spring: NB. Graph Ia: (3 pts) Using the data from Table 1 in the experimental details file and your Calc: 1a results, plot a graph of the position of the platform as a function of the force 'applied on the spring: Use the linear regression tool to fit your data and be sure to show the uncertainty ofyour linear fit parameters You should also show your data table in your graph file by using the "print" function in Logger Pro (and not "print graph") Be sure to give your graph an appropriate title that describes the data shown: SOLVED: Calculation Ia: (1 pts) For each value of hanging mass on the spring, calculate the force applied 0n the spring:
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