如图(图是)A板长L=5m,M=5kg,板的右端与桌边对齐,在A上距右端S=3m处放一个m=2kg的物体B,对A加水平恒力F,将A从B下抽出,恰使B停在桌子右端边缘,已知AB间υ=0.1,A与桌面间υ=0.2.求:①B离开板前后的a分别
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![如图(图是)A板长L=5m,M=5kg,板的右端与桌边对齐,在A上距右端S=3m处放一个m=2kg的物体B,对A加水平恒力F,将A从B下抽出,恰使B停在桌子右端边缘,已知AB间υ=0.1,A与桌面间υ=0.2.求:①B离开板前后的a分别](/uploads/image/z/6647785-25-5.jpg?t=%E5%A6%82%E5%9B%BE%28%E5%9B%BE%E6%98%AF%29A%E6%9D%BF%E9%95%BFL%3D5m%2CM%3D5kg%2C%E6%9D%BF%E7%9A%84%E5%8F%B3%E7%AB%AF%E4%B8%8E%E6%A1%8C%E8%BE%B9%E5%AF%B9%E9%BD%90%2C%E5%9C%A8A%E4%B8%8A%E8%B7%9D%E5%8F%B3%E7%AB%AFS%3D3m%E5%A4%84%E6%94%BE%E4%B8%80%E4%B8%AAm%3D2kg%E7%9A%84%E7%89%A9%E4%BD%93B%2C%E5%AF%B9A%E5%8A%A0%E6%B0%B4%E5%B9%B3%E6%81%92%E5%8A%9BF%2C%E5%B0%86A%E4%BB%8EB%E4%B8%8B%E6%8A%BD%E5%87%BA%2C%E6%81%B0%E4%BD%BFB%E5%81%9C%E5%9C%A8%E6%A1%8C%E5%AD%90%E5%8F%B3%E7%AB%AF%E8%BE%B9%E7%BC%98%2C%E5%B7%B2%E7%9F%A5AB%E9%97%B4%CF%85%3D0.1%2CA%E4%B8%8E%E6%A1%8C%E9%9D%A2%E9%97%B4%CF%85%3D0.2.%E6%B1%82%3A%E2%91%A0B%E7%A6%BB%E5%BC%80%E6%9D%BF%E5%89%8D%E5%90%8E%E7%9A%84a%E5%88%86%E5%88%AB)
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