Engineering Science 1022A/B/Y Lecture Notes - Lecture 9: Net Force
1 Jan 2019
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Document Summary
Finding the component of the moment due to a force about an arbitrary axis: Take the dot product of this moment with a unit vector describing the orientation of axis. Find the moment due to force about any point lying on the axis will yield a or scalar indicating direction along axis. Couple: 2 parallel forces with the same magnitude, but opposite in direction separated by a perpendicular distance (d) The moment of a couple is defined as: : any position vector from the line of action of the line of action of to the line action. : any position vector from the line of action of the line of action of to the line action of. Since the moment of a couple depends only on the distance between the forces, the moment of a couple is a free vector. It can be applied at any point of the body and have the same external effects on the body.
