Create Sphere → Object, Type: Hemisphere, Segment: 48 → rotate 180 degree, make Editable
Command Window, type Axis Center → Z axis: -100%, Execute
Choose Sphere layer → Point mode tool → R click → Close Polygon Hole
Add Torus →scale down size, move it just touch the surface of sphere → make editable → Execute -100% Z axis again
Drag Torus child under Sphere → add Cylinder child under Torus layer →make editable →
execute both Y and Z axis to -100% (if want the axis center on the edge)
Add a Tube and new sphere child under Cylinder, repeat editable and execute axis , so all layers are as follow:
Varying rotation values on each object to make them look more dynamic
Animation:
Select Sphere layer (i.e. all object child included) → R click → Animate Tag → Vibrate
→ Tag: Tick Enable Rotation: XYZ as 0,15,10 degree, Frequency: 0.6
→ Duplicate Vibrate tags to all the rest objects → adjust variation of Rotation degree,
Frequency should be higher at more top objects as they are assumed lighter
(Besides Amplitude and Frequency values, can also change Seed value from 0 to 1/2/... if want 2 objects look similar movement coz of similar weight