principal moment of inertia
21Euler's equations (rigid body dynamics) — This page discusses rigid body dynamics. For other uses, see Euler function (disambiguation). In physics, Euler s equations describe the rotation of a rigid body in a frame of reference fixed in the rotating body:egin{matrix}I 1dot{omega} {1}+(I …
22Rigid rotor — The rigid rotor is a mechanical model that is used to explain rotating systems. An arbitrary rigid rotor is a 3 dimensional rigid object, such as a top. To orient such an object in space three angles are required. A special rigid rotor is the… …
23mechanics — /meuh kan iks/, n. 1. (used with a sing. v.) the branch of physics that deals with the action of forces on bodies and with motion, comprised of kinetics, statics, and kinematics. 2. (used with a sing. v.) the theoretical and practical application …
24Rotational spectroscopy — Part of the rotational vibrational spectrum of carbon monoxide (CO) gas (from FTIR), showing the presence of P and R branches. Frequency is on the x axis, and absorbance on the y axis. Rotational spectroscopy or microwave spectroscopy studies the …
25Polhode — The details of a spinning body may impose restrictions on the motion of its angular velocity vector, ω. The curve produced by the angular velocity vector on the inertia ellipsoid, is known as the polhode, coined from Greek meaning path of the… …
26Precession — For other uses, see Precession (disambiguation). Precession of a gyroscope Precession is a change in the orientation of the rotation axis of a rotating body. It can be defined as a change in direction of the rotation axis in which the second… …
27Poinsot's ellipsoid — In classical mechanics, Poinsot s construction is a geometrical method for visualizing the torque free motion of a rotating rigid body, that is, the motion of a rigid body on which no external forces are acting. This motion has four constants:… …
28solids, mechanics of — ▪ physics Introduction science concerned with the stressing (stress), deformation (deformation and flow), and failure of solid materials and structures. What, then, is a solid? Any material, fluid or solid, can support normal forces.… …
29Car handling — and vehicle handling is a description of the way wheeled vehicles perform transverse to their direction of motion, particularly during cornering and swerving. It also includes their stability when moving in a straight line. Handling and braking… …
30Rigid body — Classical mechanics Newton s Second Law History of classical mechanics  …
