Driven Torsion Pendulum, with variable damping

3A60.40 | Ba3
Catalog: 
3A60.40
Location: 
Ba3
Room: 
PS F175
Quantity: 
1
Instructors: 
Adams, Sankey, Chamberlin
  • The wires in the back of the apparatus (shown on the left) control damping and c
    The wires in the back of the apparatus (shown on the left) control damping and can be left off if damping is not required. It and is controlled by the large knob on the power supply.
  • A table showing different resonance values.
    A table showing different resonance values.
  • The 24 volt leads, connect to the top, and the voltage is varied by turning the
    The 24 volt leads, connect to the top, and the voltage is varied by turning the knobs Fein (fine) and Grob (coarse) located on top.
  • The amount of damping is varied using the big knob on the power supply.
    The amount of damping is varied using the big knob on the power supply.
  • demonstration image
  • The inputs are in parallel.
    The inputs are in parallel.
Description: 

Driven mass on spring & power supply. A motor provides the forcing function that drives a torsion wheel. The labels are in German with Ein and Aus for on and off on the power supply and Fein and Grob for fine and coarse below the tuning knobs.

Instructions: 

Problems: The settings for resonance are critical and a little practice is required to set the motor to the correct driving period.