Question

Procedure 1. Measure the inside and outside radii of the ring, the radius of the disk, and the masses of the ring and the disk, and record these values in Table 5. Table 5 Item Value Ring, inside radius (R1) 2.7 cm Ring, outside radius (R2) 3.8 cm Mass of ring (MR) Mass of Disk (MD) Radius of Disk (R) 470 g 120 g 4.7 cm 2. Place the disk firmly on the rotating system. Give it a spin using your hand. 3. Start recording data. (Click Start' in Capstone.) 4. After a few seconds of data have been recorded, carefully drop the ring onto the spinning disk. Try to center the ring over the disk as much as you can. 5. After another few seconds or so of data points have been recorded, stop data recording. 6. Repeat the data recording procedure a total of three times. 7 Use the smart tool to determine the linear speed ust before the ring was dropped and the linear speed v ust after it was dropped. Calculate he initial angular speed 이 and the final angular speed a using the where ris the radius of the disk. Record the magnitude of these values in Table 6. Table 6 Trial Vinitial (m/s) Vfinal (m/s) Run #1 Run #2 Run #3 0.78 0.77 0.77 0.27 0.28 0.26 Experiment 2-Calculations 1. Calculate the moments of inertia of the ring, disk, and their sum. Record these values in Table 7 Table 7 Item Moment of inertia of ring Moment of inertia of disk Moment of inertia of disk Value (kg. m2) 0.000510655 0.00013254 ring 0.000643195 2. Repeat the data analysis process for each run, selecting the next run from the data list. Complete Table 8 by calculating the percent difference between the initial and final angular momentum of system. Table 8 Trial | (rad/s) Run #11 16.59 Run #21 16.38 Run #3116.38 uf (rad/s) | initial angular momentum (N-m . s)| Final angular momentum (N-m-s)|% Difference 5.744 5.957 5.53191 0.00246

Answer 1

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