please

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please
xOKAƿԎBo^15NF$((W1/J JPGogjx"l~S&p(rNC$ Gsy\vx>tF*luZ&E^hN+Wa c =B(hrJ\l (#C8廘H ,(\9c$Ml305ڙPXLf~Y,`DeÈd? AB1;d*P+\pVyjz=ؖz1 ^:}[[<8Rz4L+vt矯`5lPHGY'{北a:~?,b5$J47?v

please
please
 

please
(1)G=F=pS=2N,m=G/g=0.2kg
(2)h=p/密度g=0.09m;
F=pS=9N,G=mg=10N,因为F