Inertia In Rotational Motion Apparatus

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

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

Technical data:
Hollow cylinder
Outer diameter: d=120mm
Inner diameter: d=110mm
Mass: 0.9kg
Solid cylinder
Diameter: d=120mm
Mass: 900g
Weight for the drive: 1n
Rotating rod: 550mm long, d=10mm
Weights: 100g, 200g, 400g
Dimensions and weight:
L x w x h : approx. 600 x 200 x 400 mm (set-up)
Weight : approx. 9 kg.