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1.有些家用玻璃茶几的桌架是用四个塑料吸盘吸附在桌面上的（如图1）.如果每个吸盘的直径是4 cm,计算一下,桌架质量不超过多少时,抬起桌面就能把桌架带起.实际上,所能带起的桌架质量总小于上述计算值,请分析原因.
妙解压力差问题的分析
【摘 要】
：
1.有些家用玻璃茶几的桌架是用四个塑料吸盘吸附在桌面上的（如图1）.如果每个吸盘的直径是4 cm,计算一下,桌架质量不超过多少时,抬起桌面就能把桌架带起.实际上,所能带起的桌架
【机 构】
：
山东省莱州市实验中学
【出 处】
：
数理化解题研究(初中版)
【发表日期】
：
2015年2期
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