Centrifugal hoops "compact"

To demonstrate the flattening of a deformable body under the influence of centrifugal force (model experiment on the flattening of the earth due to its rotation);
Two crossed plastic tyres on a rotation axis with M3 thread, to be screwed onto the compact magnetic module with pivot bearing
Diameter of the tyres: approx. 120 cm
Dimensions: 130 x 145 x 12 mm (plastic strips pushed together)
Mass: approx. 16 g

additionally required:
P1345-1D MBC pivot bearing with transmission ratio