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I'm not even able to understand what i have to do, I dont even know how to use excel, if someone could just maybe, help
I'm not even able to understand what i have to do, I dont even know how to use excel, if someone could just maybe, help me do question 1 and ill try to maybe use the data to finish the rest? please im so lost, i want to really understand this.
Procedure A. Computer setup. Prepare an excel spreadsheet with columns for mode number n, frequency f, wavelength , hanging mass m, string length L, and string density . B. Experimental setup. Before mounting the string, determine its linear density (mass per unit length). To create the standing waves, tie the string to a post and pass it over the head of the wave driver (a speaker with a string holder). Pass the string over the pulley and use the hanging set to hold a mass to tense the string. Use a mass of 0.150kg at first. C. Data recording and analysis Part I 1. Measure the length L of the vibrating portion of the string. Keep this length constant during this part of the experiment. Keep a constant amount of hanging mass. 2. In capstone, select the signal generator (in the tools section). Start with a low frequency (20Hz) and a low amplitude (3V). Click the ON button. When not in use, turn off the driving force by pressing the off button. 3. Change the frequency of the Signal Generator to adjust the vibrations so that the string vibrates in one segment. Adjust the driving amplitude and frequency carefully to obtain a large-amplitude wave. 4. Record the frequency you found. 5. Repeat steps 1 and 2 for a standing wave with two antinodes, n=2. The string should vibrate with a node at each end and one in the center. 6. How is the frequency of the two-segment wave related to the frequency of the one-segment wave? Calculate the ratio of the frequencies. 7. With the wave vibrating in two modes, the length of the string, L, is one wavelength (L=). Does it look like one wavelength? Since the string vibrates up and down so fast, it is hard to see that when one side is up, the other side is down. Try touching the string at an anti-node. What happens? Try touching the string at the central node. Can you hold the string at the node and not significantly affect the vibration? 8. What was the wavelength when the string was vibrating in one segment? Use Equation 1 to calculate the speed of the one-segment wave. Include this calculation in your spreadsheet. 9. Calculate the speed of the two-segment wave. How do these two values compare? Are they about the same? Does this make sense theoretically? 10. Adjust the frequency so that the string vibrates with three antinodes (n=3). Has the velocity changed? Does the speed of the wave depend on the wavelength and the frequency? 11. Keep changing the frequency finding resonances for eight different conditions with n-loops (1,2,3,4,5,6,7,8,9,10) 12. Use your spreadsheet to create a graph of resonant frequency against the mode number. Find the slope of this straight line. Derive a theoretical value for this slope in terms of T,L and . Compare the experimental and theoretical values and calculate the percent difference. 1. What variable is used to quantify the inertia of the string? Give a one line answer and indicate its symbol and units. 2. What variable is used to quantify the restoring forces in the string? Give a one line answer and indicate its symbol and units. 3. Write down the speed of wave propagation in a string in terms of the tension of the string and the linear density. Indicate the variables used. 4. Write down the speed of the string in terms of the frequency and wavelength of a wave traveling down the string. 5. Combine the last two equations to obtain an equation for frequency in terms of tension, linear density, and wavelength, but NOT speedStep by Step Solution
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