TM-1327 Bifilar And Trifilar Apparatus


  • Oscillation experiments on a mathematical pendulum.
  • Determination of the centre of inertia of a beam, a disk cylinder and a hollow disk cylinder in a rotary pendulum experiment


  • Rotary and pendulum oscillation experiments with 3 different bodies on bifilar / trifilar pendulums
  • Quick-action clamp for the suspension cords
  • Bar made of Stainless Steel
  • Disk Cylinder made of Stainless Steel
  • Hollow disk cylinder made of Stainless Steel
  • Suspension cord length up to 2000mm possible


This apparatus allows the user to study the oscillations on pendulums with bifilar and trifilar suspension . For this purpose a rectangle bar, a Disk cylinder, or a hollow disk cylinder made of Stainless Steel can be hung from a wall mounted plate and placed in oscillation.

The bodies used in the experiments have strong steel hooks for attachment to the suspension cords. The length of the cords can be rapidly changed and securely fixed using clamping screws. The beam can oscillate, by translation, in the plane of suspension like an ideal mathematical pendulum. The cylinder and the circular ring work as rotary pendulums.