Lesson: Moment of a Force about a Point in 2D: Scalar Mathematics • Third Year of Secondary School

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In this lesson, we will learn how to find the sum of moments of a group of forces acting on a body about a point in 2D.

Students will be able to

understand that the moment of force is a measure of its tendency to cause a body to rotate about a specific point,
understand that if the line of action of a force passes through a point, the force does not give rise to a moment about that point,
calculate the moment of a force about a point,
calculate the moment of the sum of a system of forces about a point,
understand that the counterclockwise direction is defined as positive for moments.