Coil spring vibrations (TM 164)

Coil spring vibrations (TM 164)

torsional oscillations of a spring-mass system



  • In helical springs, the spring force is generated by the elastic deformation of a metal band wound in an Archimedean spiral.
  • If a mass is attached to the spring, we refer to it as a spring–mass system.
  • The resistance that the spring presents opposite of the elastic deformation is known as spring stiffness.
  • It is a characteristic variable of the spring.
  • The TM 164unit comprises a helical spring connected to a rotating lever.
  • Masses can be attached to the lever at various distances.
  • This creates a spring-mass system, which can be used to study the effects of the spring stiffness, mass and mass distribution on the oscillation frequency.
  • The deflection angle can be read on an angle scale.
  • The experimental unit is designed to be fixed to a wall.

Technical Details:


  • investigate vibrations on a spring-mass system
  • lever with sliding mass to deflect the helical spring
  • adjustable distance of the mass to the rotation axis
  • angle scale for reading the angle of deflection
  • stopwatch to measure the oscillation period
  • determine the natural frequency and the spring stiffness
  • bracket for wall mounting

Technical Data:

  • Helical spring:
    • cross-section: 10x1mm
    • spring length: approx. 800mm
    • inner radius: 10mm
    • outer radius: 50mm
    • winding distance: 8,5mm
  • Sliding mass: 2x 0,5kg
  • Distance from mass to rotation axis:
    • 36…150mm
  • Deflection angle:
    • 360°
    • graduation: 1°
  • Stopwatch: 1/100s

Dimensions & Weight:

  • L x W x H: 250x200x360mm
  • Weight: approx. 6kg

Learning Objections/Experiments:

  • determine the rigidity of a helical spring
  • determine the natural frequency of a spring-mass system
  • investigate the effect of mass and mass distribution

Scope of Delivery:

  • 1 experimental unit
  • 1 set of instructional material

Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.