Two-dimensional rigid-body equilibrium2D
Sliding and overturning
Construct planar free-body diagrams and solve support reactions, stability, and three-force-body conditions.
Open the complete lessonEngineering simulation studio
Purpose-built 2D FBDSliding and overturning stability
Compare sliding, overturning, eccentricity, and contact-pressure limits.
middle thirdbase resultantuplift
Engineering model scope
Category
Two-dimensional rigid-body equilibrium
Idealization
Ideal supports supply only their permitted reactions; deformation is neglected.
Acceptance check
Check ΣFx = 0, ΣFy = 0, ΣM = 0, plus contact, uplift, sliding, or tipping limits where relevant.