P=m*g-m*a a=(m*g-P)/m=(2000*10-15000)/2000=2,5 м/с2 R=V^2/a=10^2/2,5=40 м
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P=m*g-m*a a=(m*g-P)/m=(2000*10-15000)/2000=2,5 м/с2 R=V^2/a=10^2/2,5=40 м