The dimensions of a couple are

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(A) couple is defined as the product of a force and the perpendicular distance between the two forces (arm length).Mathematically,$	ext{Couple} = 	e

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$M{L^2}{T^{-2}}$

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(A) couple is defined as the product of a force and the perpendicular distance between the two forces (arm length).Mathematically,$	ext{Couple} = 	ext{Force} 	imes 	ext{Arm length}$.The dimensional formula of force is $[MLT^{-2}]$.The dimensional formula of length is $[L]$.Therefore,the dimensions of a couple are $[MLT^{-2}] 	imes [L] = [ML^2T^{-2}]$.

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