UNIT 08 Mechanical Waves BCLN PHYSICS 1 1 - Rev. Feb. 2019 UNIT 08: Mechanical Waves BCLN PHYSICS 1 1 - Rev. Feb, 2019 2. Wiggle the wrench to create a single pulse on the top side of the string. Draw your 6. Change to Loose End and repeat steps 2 and 3. Draw what you observe for this case. observations of this pulse as it travels to the Fixed End and back. Pay attention to pulse width and amplitude when sketching. Shape of pulse before reflecting (sketch Shape of pulse after reflecting (sketch string Draw a Fixed End as a solid "dot" string with pulse travelling right) with pulse travelling left) Shape of pulse before reflecting (sketch Shape of pulse after reflecting (sketch string string with pulse travelling right) with pulse travelling left) 7. Compare your observations of the Loose End case to the Fixed End case. Describe both similarities and differences. Wiggle the wrench to create a single pulse on the bottom side of the string. Draw your observations of this pulse at it travels to the Fixed End and back. Shape of pulse before reflecting (sketch Shape of pulse after reflecting (sketch string string with pulse travelling right) with pulse travelling left) 8. Change to No End and send a pulse down the string. Draw what you observe for this case. 9. Summarize your observations: a. A wave pulse will flip upside down (invert) when it reflects off of 4. Describe any similarities or differences between the two cases you have just observed. b. A wave pulse will not flip upside down (remain upright) when it reflects off of 5. Reduce the tension and send another pulse. Describe the differences between this pulse c. Changing the tension in the string changes the wave's and the previous one. Be as detailed in your description as possible and use "waves terminology"