# Cycle 4 Physics.docx - Cycle 4 Vibrating String Physics 201...

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Cycle 4: Vibrating String Physics 201 Lab Report Wednesday 5:50 Due Date: 3/28/18 Name: Paige Roberson ; VIP: 00285484 Lab Partner: Tegan Schimdt; VIP: 00277780 Abstract The objective of this experiment was to determine the frequency of the vibrating string while putting different weights on the pulley to create different number of loops within the vibrating string. By using the weight of the pulley(tension), speed of the vibration (velocity),the length of the loops (linear mass density) and the wavelength to determine the frequency by using the following formula. Ƒ=√slope/µ Therefore, the slope of the first string was calculated to be .7523 N/wavelength^2 which makes the frequency 51.4 Hz. Our experimental frequency was different 15% compared to the theoretical 60Hz. The second string was calculated to be 2.8 N/wavelength^2 which made the frequency 55 Hz. Our experimental frequency for the second string was about 8%
different than the theoretical 60Hz. In conclusion, when the number of loops increases the results decrease. Introduction In this experiment, an electric vibrating machine is used to vibrate a thin and thick string