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Moments of inertia and torsional vibrations

Moments of inertia and torsional vibrations

Item no.: P2133100

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Various bodies perform torsional vibrations about axes through their centres of gravity. The vibration period is measured and the moment of inertia determined from this.


  • Selection of materials allows demonstrating all aspects of moments of inertia in one experiment
  • Clear and easy set-up


The following will be determined:

  1. The angular restoring moment of the spiral spring.
  2. The moment of inertia a) of a disc, two cylinder, a sphere and a bar, b) of two point masses, as a function of the perpendicular distance to the axis of rotation. The centre of gravity lies in the axis of rotation.

What you can learn about

  • Rigid body
  • Moment of inertia
  • Axis of rotation
  • Torsional vibration
  • Spring constant
  • Angular restoring moment
  • Moment of inertia of a sphere
  • Moment of inertia of a disc
  • Moment of inertia of a cylinder
  • Moment of inertia of a long bar
  • Moment of inertia of 2 point masses
Title Item no.
Optional Accessories
Portable Balance, OHAUS CX2200 48921-00

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