Varignon's theorem states that the moment of a force about a point is equal to the sum of the moments of its components about the same point. In simpler terms, if you break a force into smaller parts (components), the overall rotational effect (moment) of the original force is the same as the sum of the rotational effects of its components
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A moment of a couple refers to the tendency of a pair of equal and opposite parallel forces to cause rotation. It's calculated by multiplying the magnitude of one force by the perpendicular distance between the two forces, which is often referred to as the couple's moment arm.
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Let’s solve Determine the resultant force acting on the triangle plate