如图所示,重力为4.8N、边长10厘米的正方体木块,浸没在水中,其上表面距水面40厘米,木块与容器底的连线长30厘米.求(1)木块下表面所受水的压强为多大?(2)线对木块的拉力为多大?(3)如
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![如图所示,重力为4.8N、边长10厘米的正方体木块,浸没在水中,其上表面距水面40厘米,木块与容器底的连线长30厘米.求(1)木块下表面所受水的压强为多大?(2)线对木块的拉力为多大?(3)如](/uploads/image/z/479405-29-5.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E9%87%8D%E5%8A%9B%E4%B8%BA4.8N%E3%80%81%E8%BE%B9%E9%95%BF10%E5%8E%98%E7%B1%B3%E7%9A%84%E6%AD%A3%E6%96%B9%E4%BD%93%E6%9C%A8%E5%9D%97%2C%E6%B5%B8%E6%B2%A1%E5%9C%A8%E6%B0%B4%E4%B8%AD%2C%E5%85%B6%E4%B8%8A%E8%A1%A8%E9%9D%A2%E8%B7%9D%E6%B0%B4%E9%9D%A240%E5%8E%98%E7%B1%B3%2C%E6%9C%A8%E5%9D%97%E4%B8%8E%E5%AE%B9%E5%99%A8%E5%BA%95%E7%9A%84%E8%BF%9E%E7%BA%BF%E9%95%BF30%E5%8E%98%E7%B1%B3.%E6%B1%82%EF%BC%881%EF%BC%89%E6%9C%A8%E5%9D%97%E4%B8%8B%E8%A1%A8%E9%9D%A2%E6%89%80%E5%8F%97%E6%B0%B4%E7%9A%84%E5%8E%8B%E5%BC%BA%E4%B8%BA%E5%A4%9A%E5%A4%A7%3F%EF%BC%882%EF%BC%89%E7%BA%BF%E5%AF%B9%E6%9C%A8%E5%9D%97%E7%9A%84%E6%8B%89%E5%8A%9B%E4%B8%BA%E5%A4%9A%E5%A4%A7%3F%EF%BC%883%EF%BC%89%E5%A6%82)
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