rigid bodies
Non-deforming physical entities
Rigid bodies are objects treated as if they cannot bend, stretch, or deform under force—their shape remains constant regardless of what acts on them.
The concept is fundamental in classical physics and engineering, where it simplifies calculations of motion and force: Calculate the rotation of the rigid body about its center of mass.
Real objects always deform slightly, but treating them as rigid bodies works when those deformations are negligible.
- kinematicsStudy of movement itself
- physicsScience of matter and energy
- dynamicsStudy of forces
- solidFirm matter state
- stiffNot easily bent
firm · collision · mass · center of mass · inertia · spinning top · mechanics · moment of inertia · angular momentum · force · hard · velocity · Newton's laws · acceleration · equilibrium · torsion · torque · structural stability