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Name...........................................Yenka and OscillationsOpen ‘Yenka’Choose ‘Local’(If necessary select change to “Motion”)Select ‘New’OscillationsOpen the folders and create the simulation shown below.Select a spring and a (billiard) ball. Link the ball to three separate graphs to the ball select the three different properties, displacement, velocity and acceleration (see below). Instructions:Get ready to set your ball in SHM by following the instructions carefully.Don’t select the whole ball, but just click on the edge so that you are able to move it to change the spring length. You can set the ball in motion either by extending the spring or stretching the spring. You will produce a nicer looking displacement graph if you compress the spring almost fully as it will oscillate more closely around zero:An alternative way to get the spring moving is to set a value for the force.Slow the animation down to x 0.1 speed. Click on fit to x axis and fit to y axis for each of the graphs, so that the traces can easily be seen at a suitable scale.Pause the animationReset graphs and press play so that they all start at the same time.Analysis:When is the displacement :greatest? ………………………………………………………………………………………………………smallest? ………………………………………………………………………………………………………When is velocity:greatest? ………………………………………………………………………………………………………smallest? ………………………………………………………………………………………………………When is acceleration:greatest? ………………………………………………………………………………………………………smallest? ………………………………………………………………………………………………………How does the size of the force shown by the vector arrow relate to the acceleration?……………………………………………………………………………………………………………………………………….……………………………………………………………………………………………………………………………………….How does the simulation illustrate the formula a α -x which is true for all objects exhibiting SHM……………………………………………………………………………………………………………………………………….……………………………………………………………………………………………………………………………………….Look at the gradient of the displacement-time graph. How could you use this to determine the velocity?……………………………………………………………………………………………………………………………………….……………………………………………………………………………………………………………………………………….How could you determine the acceleration from the velocity-time graph?……………………………………………………………………………………………………………………………………….……………………………………………………………………………………………………………………………………….Predict what you think agraph of acceleration against displacement would look like. Draw a sketch of your prediction below:Now try out this graph by adding it in as shown:(To add the dispacement property to the x axis, you need to change time to “specific object property’)Change the size of the original extension/compression and release the ball again. Look at the graphs produced and compare them to the original ones. Describe the differences which you observe.……………………………………………………………………………………………………………………………………….……………………………………………………………………………………………………………………………………….……………………………………………………………………………………………………………………………………….……………………………………………………………………………………………………………………………………….Example results: ................
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