Relative speed at the contact point
A kinematics example: the difference of tangential speeds of belt and brush at the contact point for two direction cases.
Enter both speeds — the result will appear here.
Formulas
Co-directional tangents: v_rel = |v1 − v2|.
Counter-directional tangents: v_rel = v1 + v2.
Example
v1 = 2, v2 = 1.5 m/s: co-directional → 0.5 m/s; counter-directional → 3.5 m/s.
Limits
- Speeds are assumed constant along the contact arc; real distributions are more complex.
- Slip and filament deformation are not accounted for.
- The brush rotation direction relative to the belt decides which case applies on the unit.
Limits: Educational kinematics with explicit formulas, without technological conclusions.