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Pe: 2019-12-12T18:55:07+02:00 In: In:

daca se pot rezolva aceste probleme

Daca imi puteti rezolva cele trei probleme

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  1. Raspuns editat.

    a) p=\rho*g*h=1000*0,06*10 N/m2 =600N/m2
    b) F=p*S=p*π* r2=600*3,14 *0,0001N =0,1884 N

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    3.m1=1,2 t=1200 kg
    S1=20 cm2=20*10-4 m2=2*10-3 m2
    S2=400 cm2=400*10-4 m2=4*10-2 m2
     p1=p2=>\frac{F_{1}}{S_{1}}=\frac{F_{2}}{S_{2}}
    F1=m1g=1200*10=12*103 N
    F_{1}=\frac{S_{1}F_{2}}{S_{2}}=\frac{2*10^{-3}*12*10^{3}}{4*10^{-2}}=\frac{24}{4*10^{-2}}=600 N

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