$B!ZNcBj(J4-1$B2rEz![(J

$B5$5e$K$+$+$k=ENO$O(J

$B!!(J0.02 kg$B!_(J9.8 m/s2= 0.196 kg(I%(Jm/s2= 0.196 N

$B@E$+$KIb$+$s$@$H$-$NIbNO$O=ENO$KEy$7$$$H9M$($i$l$k$+$i!"IbNO$N$9$k;E;v(JWF$B$O(J

$B!!(JWF=Fd=0.196 N$B!_(J3.5 m=0.686 N(I%(Jm=0.69 J

$B=ENO$H0\F0J}8~$O5U8~$-$J$N$G!"=ENO$N$9$k;E;v(JWW$B$O(J

$B!!(JWW=Fdcos180$B!k(J=-0.196 N$B!_(J3.5 m=-0.686 N(I%(Jm=-0.69 J

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