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Friction2D

Block on an inclined plane

Distinguish actual static-friction demand from limiting friction in blocks, ladders, wedges, and belt systems.

Open the complete lesson

Advanced engineering statics simulation

Statics Friction Simulation Suite

Five distinct dry-friction models with explicit assumptions and scenario-specific free-body diagrams.

Compare the equilibrium friction demand with the static limit, then use kinetic friction only after sliding begins.

Weight
120 N
N
20–500

Drag for exploration or enter an exact value. Press Enter to apply and Escape to restore.

Plane angle
30 deg
deg
5–80

Drag for exploration or enter an exact value. Press Enter to apply and Escape to restore.

Static friction coefficient
0.45
0.05–1.00

Drag for exploration or enter an exact value. Press Enter to apply and Escape to restore.

Kinetic friction coefficient
0.30
0.02–0.90

Drag for exploration or enter an exact value. Press Enter to apply and Escape to restore.

Calculated statesliding
WNF
Normal force
103.92 N
Required friction
60.00 N
Capacity 46.77 N
Active friction
31.18 N
Angle of repose
24.23°
Fs≤μsN,Fk=μkNF_s\leq\mu_sN,\qquad F_k=\mu_kN

Static friction matches equilibrium demand until its limiting value is reached.

Concept question: Predict the governing force or friction demand.

Model scope and verification

Scope: Educational rigid-body statics model using the selected geometry, stated idealizations, and displayed SI units.

Acceptance check: Check the governing equilibrium, compatibility, geometry, or limiting-condition statement before accepting the numerical result.

Related simulations

Rough ladder against a wallRough-interface wedgeBelt-friction explorerSliding versus overturning