In physics, a rigid body, also known as a rigid object, is a solid body in which deformation is zero or negligible. The distance between any two given...

dynamics, rigid-body dynamics studies the movement of systems of interconnected bodies under the action of external forces. The assumption that the bodies are...

direction, or angular position of an object – such as a line, plane or rigid body – is part of the description of how it is placed in the space it occupies...

describing the rotation of a rigid body, using a rotating reference frame with angular velocity ω whose axes are fixed to the body. Their general vector form...

origin. [citation needed] Spin angular velocity refers to how fast a rigid body rotates with respect to its center of rotation and is independent of the...

body of interest and the external forces acting on it. The body: This is usually a schematic depending on the body—particle/extended, rigid/non-rigid—and...

be assumed to exist at one point), or a non-rotating rigid body depends on the mass of the body as well as its speed. The kinetic energy is equal to 1/2...

In rotordynamics, the rigid rotor is a mechanical model of rotating systems. An arbitrary rigid rotor is a 3-dimensional rigid object, such as a top. To...

momentum but no linear momentum. In rigid body dynamics, force couples are free vectors, meaning their effects on a body are independent of the point of application...

points X1, X2, ..., Xn in a rigid body. The trajectories of Xi, i = 1, ..., n are defined by the movement of the rigid body. This movement is given by...

motion of a rigid body, the term displacement may also include the rotations of the body. In this case, the displacement of a particle of the body is called...

suspension can be considered to be a rigid body traveling on a plane (a flat, two-dimensional space). This body has three independent degrees of freedom...

failure; Section 1: "The Dynamics of Rigid Bodies and Mathematical Exterior Ballistics" (Chapter 1, "The motion of a rigid body about a fixed point (Euler and...

in a non-rigid body, from an initial configuration to a final configuration, excluding the body's average translation and rotation (its rigid transformation)...

consisting of numerous rigid linkages, the configuration space consists of the location of each linkage (taken to be a rigid body, as in the section above)...

through elastic body deformation. It gains some or all of its motion from the relative flexibility of its members rather than from rigid-body joints alone...

of motion. In the case of a single rigid body, the center of mass is fixed in relation to the body, and if the body has uniform density, it will be located...

Newtonian mechanics, the motion of a rigid body is often understood by separating it into movement of the body's center of mass and movement around the...

second moment of mass, or most accurately, rotational inertia, of a rigid body is a quantity that determines the torque needed for a desired angular...

objects (or soft bodies). The applications are mostly in video games and films. Unlike in simulation of rigid bodies, the shape of soft bodies can change,...

are two important special cases, however: If the fluid rotates like a rigid body – that is, if the angular rotational velocity Ω is uniform, so that u...

velocity vectors v ( t ) {\displaystyle \mathbf {v} (t)} of a point on a rigid body rotating around the origin: v = Ω r . {\displaystyle \mathbf {v} =\Omega...

displacements of rigid bodies. According to Chasles' theorem, every rigid transformation can be expressed as a screw motion. A rigid transformation is...

In any case, the analysis of the rigid body motion begins with the point force model. And when a force acting on a body is shown graphically, the oriented...

formulated to analyze systems of rigid bodies, but they have also been developed for the study of the mechanics of deformable bodies. The principle of virtual...

freedom system experiences both rigid-body translation and/or rotation and vibration. The existence of a rigid-body mode results in a zero natural frequency...

kinetic phenomenon of classical mechanics which describes the movement of a rigid body with three distinct principal moments of inertia. It has also dubbed the...

in a more or less ad hoc method to obtain the best fit to data. Simple rigid body dynamics do not give the best theory; one has to account for deformations...

sum of the angular momenta of its constituent parts. For a continuous rigid body or a fluid, the total angular momentum is the volume integral of angular...

ultimately stable steady state equilibrium radiation in a cavity in a rigid body, at a uniform temperature, that is entirely opaque and is only partly...