Lesson
Lesson-4.3.3- the weight of a body acts through its center of gravity.the principle of moments for a simple system of parallel forces acting in one plane.
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Lesson-4.3.2- the relationship between the moment of a force and its perpendicular distance from the pivot: moment = force ?? perpendicular distance from the pivot.PreviousLesson-4.3.4- the upward forces on a light beam, supported at its ends, vary with the position of a heavy object placed on the beam.Next