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力使物體轉動的效果,不僅跟力的大小有關,還跟力和轉動軸的距離有關.力越大,力跟轉動軸的距離越大,力使物體轉動的作用就越大.從轉動軸到力的作用線的距離,叫做力臂.力和力臂的乘積叫做力對轉動軸的力矩.力矩(torque)…
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