File:Friction_Animation_2_Blocks.gif · Wikimedia Commons · See Wikimedia Commons
Also known as frictional force, friction force
兩個表面接觸的物體相對滑動時抵制它們的相對移動的力
Friction is a force that resists movement between two surfaces in contact with each other, causing objects to slow down or stop sliding. It matters because it affects how quickly things move—for example, a surface with more friction will cause an object to slide down more slowly than a surface with less friction.
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32,143 papersvia PubMed
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Article · 中文
摩擦力（英語：Friction）指两个表面接触的粗糙物体相对运动或存在相对运动的趋势时阻碍它们的相对运动的力，是经典力学的一個名詞。广义地，物体在液体和气体中运动时也受到摩擦力。 摩擦力產生的情形： * 一物體在另一個物體表面上滑動或將要滑動時，兩个物體在接觸面上會產生阻止相對運動的作用力，這種作用力稱為摩擦力。 * 物體在靜止或運動狀態，均可能在接觸面上產生摩擦力。 * 摩擦力與物體相對運動的方向相反。
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