图8中的物体A的质量是400g,物体B的体积是8cm3.用细绳将两物体通过定滑轮连接,放手后,A恰能沿着水平桌面向右做匀速直线运动.若将B始终浸没在水中,并使A沿着水平桌面向左做匀速直线运动时,
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![图8中的物体A的质量是400g,物体B的体积是8cm3.用细绳将两物体通过定滑轮连接,放手后,A恰能沿着水平桌面向右做匀速直线运动.若将B始终浸没在水中,并使A沿着水平桌面向左做匀速直线运动时,](/uploads/image/z/4986246-30-6.jpg?t=%E5%9B%BE8%E4%B8%AD%E7%9A%84%E7%89%A9%E4%BD%93A%E7%9A%84%E8%B4%A8%E9%87%8F%E6%98%AF400g%2C%E7%89%A9%E4%BD%93B%E7%9A%84%E4%BD%93%E7%A7%AF%E6%98%AF8cm3.%E7%94%A8%E7%BB%86%E7%BB%B3%E5%B0%86%E4%B8%A4%E7%89%A9%E4%BD%93%E9%80%9A%E8%BF%87%E5%AE%9A%E6%BB%91%E8%BD%AE%E8%BF%9E%E6%8E%A5%2C%E6%94%BE%E6%89%8B%E5%90%8E%2CA%E6%81%B0%E8%83%BD%E6%B2%BF%E7%9D%80%E6%B0%B4%E5%B9%B3%E6%A1%8C%E9%9D%A2%E5%90%91%E5%8F%B3%E5%81%9A%E5%8C%80%E9%80%9F%E7%9B%B4%E7%BA%BF%E8%BF%90%E5%8A%A8.%E8%8B%A5%E5%B0%86B%E5%A7%8B%E7%BB%88%E6%B5%B8%E6%B2%A1%E5%9C%A8%E6%B0%B4%E4%B8%AD%2C%E5%B9%B6%E4%BD%BFA%E6%B2%BF%E7%9D%80%E6%B0%B4%E5%B9%B3%E6%A1%8C%E9%9D%A2%E5%90%91%E5%B7%A6%E5%81%9A%E5%8C%80%E9%80%9F%E7%9B%B4%E7%BA%BF%E8%BF%90%E5%8A%A8%E6%97%B6%2C)
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