The resultant force in a couple is

Assessment: WAEC SSCE - Physics - 2015 (Objective) Subject: Physics

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The resultant force in a couple is
Answer Details
In a couple, two equal and opposite forces act on a body, but they are not in the same line. The resultant force of a couple is defined as the algebraic sum of the forces, which is zero because the forces are equal in magnitude and opposite in direction. However, the couple produces a turning effect or torque on the body, which is not zero, and depends on the magnitude of the forces and the distance between them. So the answer is (a) zero.
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