Part 3: How the spring constant affects velocity 17. Set Trevor's mass to some random value ofyour choosing. but DO NOT CHANGE it throughout this part of the lab. A value above 90 should offer you better results. Record your value in Data Table 3. 13. Choose a compression value,x, between 0.6 m and 1.6 In. DO NOT CHANGE it throughout this part of the lab. Record your value in Data Table 3. 19. Repeat step 12. Complete Data Table 3. using a different and unique spring constant. k. for the spring in each trial. 20. Calculate the speed. v1. for each trial, and the average time and speed. (Use equation 6) 21. Go to Quick Graph 4.0 and create a graph ofvelocity vs spring constant. (For a review on how to use Quick Graph 4.0. see the procedure steps for Lab 4.} 22. Record the equation of the best fit line or best fit curve you choose. Part 4: How the compression length affects velocity 23. Set Trevor's mass to some random value ofyour choosing. but DO NOT CHANGE it throughout this part of the lab. A value above 90 should offer you better results. Record your value in Data Table 4. 24. Set the spring constant, k, to some value of your choice. DO NOT CHANGE it throughout this part of the lab. A value below 1.000 should make this part of the lab easier to complete. Record your value in Data Table 4. 25. Repeat step 12. Complete Data Table 4. using a different and unique compression length, d. for the spring in each trial. 26. Calculate the speed. v1, for each trial, and the average time and speed. (Use equation 6) Recall d = 13 n1 _) the distance between the two blue lines. 27. Go to Quick Graph 4.0 and create a graph of velocity vs compression length. (For a review on how to use Quick Graph 4.0, see the procedure steps for Lab 4.) 23. Record the equation of the best fit line or best fit curve you choose. 29. Compute the potential energy, PE, using equation 2. Recall. it refers to the compression distance of the spring. 30. Calculate speed, v2, using equation 5. Also report your speed to 2 decimal places. 31. Compute the % difference between v1 and v2 for each trial and the average, and record in Data Table 4. Report to 2 decimal places. 32. Answer the end-oflab questions