Static Friction Simulation

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FIG.01FREE-BODY VISUALISATION LIVE

APPLIED FORCEF

0.0N

FRICTION RESPONSEf

0.0N

STATIC THRESHOLDμₛN

39.2N

VELOCITYv

0.00m/s

i.SURFACE MATERIAL

μₛ = 0.40 · μₖ = 0.30

ii.APPLIED PUSH

F = 0.0 N

0306090120 N

№ 01 — STATIC REGIME

SELF-ADJUSTING FRICTION

Below threshold, friction matches the applied force exactly. The net force vanishes, the block stays put. Friction here is a response, not a constant.

№ 02 — KINETIC REGIME

BOND BREAKS, BLOCK MOVES

Once F > μₛN, friction collapses to μₖN (μₖ < μₛ). The block accelerates by a = (F − μₖN) / m. Remove the push and kinetic friction brings it back to rest.