偶ぐう力りょく

noun

couple of forces; force couple

Physics term for a pair of equal, parallel, and opposite forces that produce rotation without translation.

• 偶ぐう力りょくは物ぶっ体たいを回かい転てんさせるが、並へい進しん運うん動どうは起おこさない。

  A couple of forces rotates an object but does not cause translational motion.