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TM 610 Inertia in Rotational Motion Apparatus
Education / GUNT Hamburg / Engineering Mechanics and Machine Elements / Dynamics /

This apparatus enables experiments to be performed on rotational motion in general. Weights can be fitted to a rotating rod at marked distances from the centre. A dumbbell-shaped arrangement is thus created; the inertia properties of this arrangement can be changed easily and recalculated. The arrangement is fitted to a low friction ball bearing mounted rotating drum. The system is accelerated by a metal weight attached to a cord wrapped around the drum. The time taken for the weight to fall is measured using a stopwatch, the moment of inertia of the object can then be determined. The experiment is set up quickly using table clamps and stands; it is ideally suited to group work for 2-3 persons.


Learning Objectives / Experiments

- Explanation of the term "moment of inertia"
- Determination of the moment of inertia of various bodies
- Influence of the rotating mass on the moment of inertia
- Influence of the radius of rotation on the moment of inertia
- Comparison of the moments of inertia of solid and hollow cylinders of the same weight and outside diameter


[1] Student experiments on moments of inertia, comparison of the inertia of rotation of various bodies
[2] Metal rotating bar, weights with knurled bolts for quick fastening
[3] Solid and hollow test cylinders
[4] Ball bearing mounted rotating drum, anodised aluminium
[5] Acceleration of system by weight attached to the drum


Technical Data

Rotating rod: 550mm long, D=10mm
Weights: 100g, 200g, 400g
Solid cylinder

- diameter: D=120mm

- mass: 900g
Hollow cylinder

- outer diameter: D=120mm

- inner diameter: d=110mm

- mass: 0.9kg
Weight for the drive: 1N


Dimensions and Weight
l x w x h : approx. 600 x 200 x 400 mm (set-up)
Weight : approx. 9 kg
Scope of Delivery

1 complete apparatus

1 instruction manual

Order Details

040.61000  TM 610  Inertia in Rotational Motion Apparatus