论文部分内容阅读
题:如图1所示,有一圆柱形容器和一足够长的圆柱形金属块,其截面积 S_容:S_柱=3:1,容器中盛有水,金属块吊在一根细线下,现将金属块慢慢放入水中,问:(1)若金属块浸入水中深度到15厘米的过程中,容器底部受到水的压强增大多少?(2)若绳子从金属块底刚好接触到水面到向下放下15厘米时,容器底部受到水的压强增大多少?(2000年浙江初中生自然科学竞赛题)
Question: As shown in Figure 1, there is a cylindrical container and a long enough cylindrical metal block, the cross-sectional area S_container: S_column = 3:1, the container contains water, the metal block is suspended in a thin Under the line, slowly put the metal block into the water and ask: (1) If the metal block is immersed in water to a depth of 15 cm, how much does the pressure increase at the bottom of the container? (2) If the rope is from the bottom of the metal block How much does the pressure at the bottom of the container increase when I just touch the surface of the water and drop it down by 15 cm? (Zhejiang Junior High School Natural Science Competition, 2000)