Moment of inertia,转动惯量
For example, when a body rotates about the z-axis, the forces of the pressure on the bearings that support the axis depend on the values of Ixz and Iyz. The moments of inertia with respect to parallel axes z and z′ are related by the equation (3) Iz = Iz′ + Md2 where z′ ...
Moment is the measure of the capacity or ability of the force to produce twisting or turning effect about an axis. This axis is perpendicular to the plane containing the line of action of the force. The magnitude of moment is equal to the product of the
moment of inertia (Ip) about a parallel axis, Ip=IG+m.h2 Where,IG=momentofinertiaofabodyaboutanaxisthroughitscentreofgravity,andh=distancebetweenthetwoparallelaxes 2. The following are the values of I for simple cases: (a) The moment of inertia of a thin disc of radius r about an ...
Torque or moment - the tendency of a force to rotate an object. Torque or moment - the tendency of a force to rotate an object around an axis or a point - is defined as the product of the force and the distance from the point or axis to the force vector Torque can be expressed ...
The moment of inertia computed with Equation (1) for rectangles is for an axis system with the origin a the centroid of the rectangle. To find the moment of inertia around another point/axis system, you need the parallel axis theorem. ...
For example, in Statics, a force acting on a wrench handle produces a torque, or moment, about the axis of a bolt: M = P ! L . This is the moment of a force. moment的用法 the (very) moment 可用作连词,译为“一……就”。 (此时可用 the minute; the instant; the second 等替代)...
Statics Richard Gentle, ... Bill Bolton, in Mechanical Engineering Systems, 2001 Equilibrium of a rigid body If an object fails to rotate about some axis then the turning effect of one force must be balanced by the opposite direction turning effect of another force. Thus, when there is no ...
Proof If an equimomental system of point-masses has two equal masses then any 4D rotation that preserves this equality must have a (2D) axis that is parallel to the line joining the two points. See Sect. 2.1, where the axis of the rotation is the x y-plane. The masses of the ...
The torque‐free rotation of a solid body is unstable about the axis with the intermediate principal moment of inertia. Such an instability can be shown wi... Amengual,A. - 《American Journal of Physics》 被引量: 1发表: 1996年 加载更多研究...