500г=0,5кгV=m/pV=0.5/2700=0.0002м3Fa=pgVFa=1000*10*0.0002=2HP=gmP=10*0.5=5HFy=P-FaFy=5-2=3HFy=kxx=Fy/kx=3/100=0.03м=3см