15 washers Stopper Mass (kg) 0.01676kg Washer Mass (kg) 15 washers 0.07835kg Radius (m) 0.35 Circumference (m) Average Average Trial 1 Trial 2 Trial 3 Trial 4 10 rev Time 1 rev Time (s): 4.9700 5.0200 4.740 5.310 Velocity FC (N) Fg (N) % Error51. Spin the apparatus, maintaining a constant radius at the second mark on the string. (Note: this spinning my be quick, if needed, choose another mark on the string, After the spin is stabilized, have an assistant use a stopwatch to time (in seconds) 10 revolutions and record this 10rev time for Trial 1 in Data Table 4. 52. Repeat Step 51 three more times for a total of 4 trials, recording the time in seconds in Data Table 4. 53. Measure the distance from the mark used to the middle of the stopper and record in meters in Data Table 4, Use the conversion factor 1 m = 100 cm, 54. Remove the string holding the washers to the paper clip and add 6 more washers for a total of 12 washers. Reattach to the paper clip. 55. Find the mass of the washers (including the paper clip) and record the mass in kilograms in Data Table 4. The mass of the stopper will autoll from the data you entered in Step 48, but verify it is correct. 56. Repeat steps 51-53, 57. Remove the string holding the washers to the paper clip and add 3| more washers for a total of 15 washers. Reattach to the paper clip. 58. Repeat steps 51-53. Part 1 Data Analysis 59. Complete Data Table 4 for each of the three washer masses using the following steps: a. Find the circumference of each trial using the equation C = 2m and record in Data Table 4 b. Find the average time for 10 revolutions for each setup and record in Data Table 4 c. Find the average time for 1 revolution by dividing the time for 10 revolutions by 10 and record in Data Table 4 d. Using the Circumference as the distance traveled and the average time for 1 revolution calculate the speed of the stopper using the equation: 11 = 2m / T = C /T and record in Data Table 4. e. Calculate the Centripetal Force keeping the stopper moving in a circle using the equation: F: = mstoppervz/T and record in Data Table 4 1'. Calculate the theoretical centripetal force using the equation: Fatheory = 1'2; = mwasnersg and record in Data Table 4 g. Calculate the percent difference between the Experimental Centripetal force and the Theoretical Centripetal force using the equation: ng - Fcl Percent error = F x 100% g