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TM 163 Torsional vibrations



  • Easy to adjust effective length using strong chuck


Technical Description

The model enables rotary vibration on torsion bars to be investigated. The model consists of a wall mounted base frame made of aluminium. The carrier plate has a strong chuck with the aid of which the torsion bars can be clamped in position. In the same way the mass disc and the mass ring are clamped to the torsion bar using a chuck. The effective length is easy to adjust.

Learning Objectives / Experiments
- Determination of the period of torsional vibration as a function of:
  * torsion wire length
  * torsion wire diameter 
  * rotating mass and its form


[1] Student experiment on torsional vibration
[2] Torsion wires, made of aluminium
[3] Mass disc made of galvanised steel
[4] Mass ring made of galvanised steel
[5] Strong chuck for fitting the wires
[6] Wall mounting plate made of anodised aluminium

Technical Data

Torsion wires
- length: 1100mm
- diameter: 2mm, 3mm, 4mm, 5mm and 6mm

Mass disc
- diameter: 160mm 

Mass ring
- outer diameter: 160mm
- inner diameter: 100mm

Dimensions and Weight
l x w x h: 200 x 150 x 270 mm
Weight: approx. 11 kg

Scope of Delivery
1 support
5 test wires
1 mass disc
1 mass ring
1 instruction manual

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