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12.4 MOMENTS ABOUT AN AXIS
À pRemember: Moment of a force about an axis or point is a measure of the tendency of the forces to rotate the body about the axis or point. Moments are vector quantities and have both magnitude and direction. Since real bodies rotate about axes not points we need to calculate moments about an axis.
For the previous figure find the moment about line OB with the following values.
Consider the bent pipe in the practice problem below, ([Hibbeler, 1992], prob 4-30, pg. )
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