清华大学版土力学课后答案 第一章 1-1： 已知：V=72cm3 m=129.1g ms =121.5g G s =2.70 则： 129.1 121.56.3%121.5ssm mwm- -= = = 3333129.1 *1017.9 /72121.5452.772 45 271.0*27 121.5*10 20.6 /72sssV ssat w V ssat satmg g KN mvmV cmV V V cmm V mg g g KN mV Vg rrrg r= = = = = = - = - =+ += = = = = 3320.6 10 10.6 /121.5*10 16.9 /72sat wsdsat dKN mmg KN mVg g ggg g g g =- = - = = = 则 1-2： 已知：G s =2.72 设 V s =1cm3 则33332.72 /2.722.72*10 16 /1.72.72 0.7*1 *1020.1
