[Virginia Tech Department of Physics]

Revised 07/18/2016

Physics 2215 Laboratory Equipment List

2215 Lab 9: Waves

Sine wave generator on its rod

Transition notes:

  1. The following can be left out from the previous lab (2215 Lab 8: Springs and Harmonic Motion)
    • USB-A to USB-B Cord
    • Large Universal Clamp
    • Right Angle Clamp
    • Electronic Balance - 2,200g, 0.1g Readability
    • Entire Hanging Mass Set
    • Mass Hanger 50g
  2. Don't forget to sweep!!!!! Please!!!!

Equipment List:

  1. 850 Interface
  2. USB-A to USB-mini USB cord
  3. String Vibrator (AKA Wave driver)
  4. Red Banana Cord plugged into the red socket
  5. Black Banana Cord plugged into the black socket
  6. Medium Universal Clamp
  7. Large Universal Clamp
  8. Right Angle Clamp
  9. 45cm rod
  10. Hanging Mass set
    11. with the following masses:
    • 1 x 10g hanging mass
    • 2 x 20g hanging mass
    • 2 x 50g hanging mass
    • 1 x 100g hanging mass
    • 2 x 200g hanging mass
    • 1 x 500g hanging mass
  11. 50g mass hanger
  12. 2 x Sliding pointer (AKA Ninja Stars)
  13. 250 cm of elastic string with looped ends
  14. 10cm of elastic string
  15. 2 meter stick
  16. Meter Stick Feet
  17. Super Pulley
  18. Rod, Threaded - 15cm

General Class Use:

  1. Electronic Balance - 2,200g 0.01g Readability
  2. String - Elastic, Spool

Notes and tests:

  1. Set the equipment back from the front edge of the table about half the width of the table, and bring the mouse and keyboard in front of the setup.
  2. Set it up such that the wave driver is on the side of the table closest to the lab interface.
  3. Place the pulley so it is about level with the knot tied at the other end.
  4. Place one of the pointers past the support near the pulley. Place the other pointer between the two supports.
  5. Load the test file and turn on the mechanical vibrator in the signal generator control panel.
  6. If the wave driver oscillates, then exit the program. If not, then check the wiring.
  7. Make sure when the mass holder hangs over the pulley with no extra weight the knot is not on the pulley and when you add 300g to the mass holder is does not touch the floor (if only barely).
  8. Test Case: With a 150 g mass a frequency of about 10.6 Hz should create the second harmonic.
Objects subject to Left/Right Reflection

This is what your table should look like once set up

Additional Images below:

How to set up the vibrator and string.

Image showing the mechanical vibrator plugged into the interface

How to plug in the Mechanical Vibrator(C21.1)

This image needs to be replaced with one of the medium clamp.

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