Torsion Axle

The Torsion Axle is a piece of apparatus for investigating rotational oscillation of various test bodies and for determining moments of inertia from periods of oscillation.

The axle consists of a ball-bearing mounted shaft, high-quality coil spring and a holding lug.

Uses Weights

Tests made with the axle are done using weights, which can be moved along a thin transverse rod. 

Circular Disk

The axle includes a circular disk. This enables moments of inertia for eccentric axes of rotation, as well as being suitable for confirming Steiner's theorem.

A Range of Experiment Topics

The axle enables a range of experiment topics to be covered:

• Rotary oscillations
• Determination of moments of inertia using the oscillation method
• Moments of inertia of various geometric bodies
• Steiner's theorem

Technical Specifications of the Torsion Axle

The technical specifications of the Torsion Axle are:

• Deflection torque of the spring: 0.028Nm/rad.
• Height of the torsionaol axis (approx): 200mm
• Transverse rod dimensions:
  • Length: 620mm
  • Weight: 135g
  • Weights: 260g each
• Disk dimensions:
  • Diameter: 320mm
  • Weight: 495g
  • Boreholes: 8
  • Borehole spacing: 20mm

Required Equipment

• Stand Base Tripod - 185mm