物体A放在物体B上,物体B放在光滑的水平面上,mA=6kg,mB=2kg.A、B间u=0.2,A上细线最大拉力为20NA、F12N时A相对B滑动C、F=16N时B给A的摩擦力为4ND、无论何时,A相对B静止
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![物体A放在物体B上,物体B放在光滑的水平面上,mA=6kg,mB=2kg.A、B间u=0.2,A上细线最大拉力为20NA、F12N时A相对B滑动C、F=16N时B给A的摩擦力为4ND、无论何时,A相对B静止](/uploads/image/z/4944935-47-5.jpg?t=%E7%89%A9%E4%BD%93A%E6%94%BE%E5%9C%A8%E7%89%A9%E4%BD%93B%E4%B8%8A%2C%E7%89%A9%E4%BD%93B%E6%94%BE%E5%9C%A8%E5%85%89%E6%BB%91%E7%9A%84%E6%B0%B4%E5%B9%B3%E9%9D%A2%E4%B8%8A%2CmA%3D6kg%2CmB%3D2kg.A%E3%80%81B%E9%97%B4u%3D0.2%2CA%E4%B8%8A%E7%BB%86%E7%BA%BF%E6%9C%80%E5%A4%A7%E6%8B%89%E5%8A%9B%E4%B8%BA20NA%E3%80%81F12N%E6%97%B6A%E7%9B%B8%E5%AF%B9B%E6%BB%91%E5%8A%A8C%E3%80%81F%3D16N%E6%97%B6B%E7%BB%99A%E7%9A%84%E6%91%A9%E6%93%A6%E5%8A%9B%E4%B8%BA4ND%E3%80%81%E6%97%A0%E8%AE%BA%E4%BD%95%E6%97%B6%2CA%E7%9B%B8%E5%AF%B9B%E9%9D%99%E6%AD%A2)
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