F1/S1=F2/S2; F1=m1×g; F2=m2×g;
m1×g/S1=m2×g/S2
m2=S2×m1×g/(S1×g)
m2=S2×m1/S1=0.5×70/35= 1 т
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F1/S1=F2/S2; F1=m1×g; F2=m2×g;
m1×g/S1=m2×g/S2
m2=S2×m1×g/(S1×g)
m2=S2×m1/S1=0.5×70/35= 1 т