(1)G=mg=0.6*10=6N
(2)ρ=m/v=0.6/0.05*0.02=0.6*10^3kg/m^3
(3)P=G/S=6/0.02=300pa
亲,不要忘记及时采纳哦.有问题另行提问,我会随时帮助你.