5. For each spring, plot the weight added to the spring (y) vs length stretched from the rest length (x) and find the best-fit function. (on graph paper on the last page. Label the graph according to DAT RULE). 6. Calculate for the period of oscillation for both springs in the space provided: 7. Try to measure a period of oscillation using the simulation's stopwatch. Is your calculated and actual value close? Why or why not? 2. Repeat step 1 for Spring 2 using the same masses used with Spring 1. Spring 2 Mass added (kg) Initial length (m) Length after mass added (m) 0.05 0.41 0.56 0. 1 0.41 0.62 0.25 0.47 0. 92 Pink 0.47 Blue 0.47 0. 68 Orange 0.47 0- 83 3. Calculate the strength of both springs in the space below using known masses (calculate for k) : F=-KX Spring 1 Spring 2 0.49 = -k (0.66-0.48) F = 0.05 ( 9.8) k = 2.72 N/M F = 4.9 0. 49 = -21 0.56- 0.47) 4. Calculate the mass of the unknown weights in the space below. k = 5. 44Springs, Simple Harmonic Motion, & Period of Oscillation Purpose: To better understand the mechanics of springs and simple harmonic motion. This will be done through simple measurements of distances and periods of oscillations through online simulation. Materials: Springs, Stand, Meter Stick, Weights, Stop Watch P roced u re : Follow the link in PowerSchool to open the Phet online simulation. Select the vectors option. Check the Displacement/Natural Length box. All other checkboxes are optional. Be sure the Spring 1 spring constant is set on the third tick from the left and the Spring 2 spring constant is set on the third tick from the right. 1. First measure the length of the spring (while hanging) with no attached weights. Then measure how much the spring strettheegs (from the zero weight length) for 3 known masses and 3 unknown masses