气缸弹簧 气缸是由一个连接弹簧的活塞封闭,当弹簧放松,气缸在1个大气压的压力和温度20℃下充满5升的气体.

题目：

气缸是由一个连接弹簧的活塞封闭,当弹簧放松,气缸在1个大气压的压力和温度20℃下充满5升的气体.气缸是由一个连接弹簧(弹簧常数为k =2000牛顿/米)的活塞封闭,如下面的图.当弹簧放松,气缸在1个大气压(1atm=101.3kPa)的压力和温度20℃下充满5升的气体.如果活塞具有横截面面积0.01平方米,并且厚度和质量可忽略不计,当温度升高到250℃,活塞会升高多少?附上原文A cylinder is closed by a piston connected to a spring of with spring constantk = 2000 N/m,as shown in the figure below.With the spring relaxed,thecylinder is filled with 5 L of gas at a pressure of 1 atm and a temperature of20℃.(a) If the piston has a cross-sectional area 0.01 m^2 and negligible mass andthickness,how high will it rise when the temperature is raised to 250℃?(b) What is the pressure of the gas at 250℃?

解答：

P1V1/T1=P2V2/T2V2=V1+ShP2=P1+kh/SP1 V1 S T1 T2都是已知数,h,P2,V2未知.2,3方程带入1即得hh带入3得P2. 再问： h=1.28m 对吗?@@