| inertia | ความเฉื่อย, อินเนอร์เชีย |
| moment of inertia | โมเมนต์ความเฉื่อย |
| Body force: | (english) An external force acting throughout the mass of a body. Gravity is a body force. An inertial force is a body force. |
| Dynamic equilibrium: | (english) Equilibrium which includes inertial forces. |
| Inertia: | (english) The tendency of an object at rest to remain at rest, and of an object in motion to remain in motion. |
| Inertial Force: | (english) A fictitious force used for convenience in visualizing the effects of forces on bodies in motion. For an accelerating body, the inertial force is considered as a body force whose resultant acts at the object's center of gravity in a direction opposite the acceleration. The magnitude of the force is the mass of the object times the magnitude of the acceleration. |
| Moment of inertia (I): | (english) Moment of inertia has two distinct but related meanings: 1) it is a property of a an object relating to the magnitude of the moment required to rotate the object and overcome its inertia. 2) A property of a two dimensional cross section shape with respect to an axis, usually an axis through the centroid of the shape. |
| Section Modulus: | (english) A property of a cross sectional shape, which depends on shape, and orientation. Section modulus is usually denoted S, and S = I/c, where I = moment of inertia about an axis through the centroid, and c is the distance from the centroid to the extreme edge of the section. |
| Static equilibrium: | (english) Equilibrium which does not include inertial forces. |
| Polar Moment of Inertia | โพล่าร์โมเมนต์แห่งความเฉื่อย |