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力矩是個向量,但不要把力矩方向與物體轉動方向混了.力矩方向是人自己規定的,因為人長了個右手,所以根據右手定則只需大拇指方向指向力矩方向,那麼四只環繞方向就是該力對剛體的轉動方向.就是向量的向量積.力矩方向只…
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