g; Experiment Inventory Materials Labware String 5 N Spring Scale 15 Washers Pulley *Masking Tape Tape Measure *2 Paperclips *Stopwatcthimer \"You must provide items marked in *red EXPERIMENT 3: NEWTON'S SECOND LAW AND THE ATWOOD MACHINE This experiment will demonstrate the mechanical laws of motion using a simple assembly named the Atwood machine that is similar to that used by Rev. George Atwood in 1784 to verify Newton's Second Law. PROCEDURE Part 1 D 1. Support the pulley so that objects hanging from it can descend to the oor. Do this by tying a short piece of string to one of the pulley hooks. Use a piece of masking tape to secure the string to a table top or door frame so that the pulley hangs plumb (Figure 5). Note: A higher pulley support will produce longer time intervals which are easier to measure. D 2. Thread a piece of string through the pulley so that you can attach washers to both ends of the string. The string should be long enough for one set of washers to touch the ground with the other set near the pulley. Figure 5: \"may \"up (You may attach the washers using a paperclip or by tying them on). I] 3. Use the spring scale to weigh the set of fteen washers. Divide the total mass by fteen to nd the average mass of a washer. Record the total mass of the washers and average mass of one washer in Table 5. D 4. Attach seven washers to each end of the string. D 5. Observe how the washers on one side behave when you pull on the washers on the other side. I] 6. Add the remaining washer to one end of the string so one side of the string has seven washers (M1). and the other has eight washers attached to it (M2). Answer Post Lab Question 1 based on your observations. D 7. Place M1 on the oor. Use the tape measure to measure the height that M2 is suspended while M1 is on the oor. Measure the distance M2 will fall if you release the light set when it is in contact with the oor. Record the distance in Table 5. I] 8. Time how long it takes for M2 to reach the oor. Repeat Steps 7-8 four more times (ve times total), recording the values in Table 5. Calculate the average time. I] 9. Calculate the acceleration (assuming it is constant) from the average time and the distance the washers moved. eight washers attached to it (M2). Answer Post Lab Question 1 based on your observations. D7. Place M1 on the oor. Use the tape measure to measure the height that M2 is suspended while M1 is on the oor. Measure the distance M2 will fall if you release the light set when it is in contact with the floor. Record the distance in Table 5. D8. Time how long it takes for M2 to reach the oor. Repeat Steps 7-8 four more times (ve times total), recording the values in Table 5. Calculate the average time. D9. Calculate the acceleration (assuming it is constant) from the average time and the distance the washers moved. 2018, eScience Labs Part 2 D10.Transfer one washer, so that there are six on one end of the string (M1) and 9 on the other (M2). D 11. Determine the mass on each end of the string. D 12. Place the M1 on the floor. Measure the height that M2 is suspended at while M1 is on the floor. Measure the distance M2 will fall if you release the light set when it is in contact with the oor. I] 13. Time how long it takes for the heavy set of washers to reach the floor. Repeat Steps 3-4 ve times, recording the values in a table and then calculate the average time. I] 14. Calculate the acceleration (assuming it is constant) from the average time and the distance the washers moved. Experiment 3 Data Sheet Table 5: Atwood Machine Data Average Mass of Washer Mass of 15 Washers (kg) (kg) Procedure 1 Height (m) Trial Time (s) 1 N 3 4 5 Average Average Acceleration (m/s?) Procedure 2 Height (m) Trial Time (s) 1 2 3 4 5 Average Average Acceleration (m/s?)