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2010-02-28T17:01:00+01:00
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dane Q=3,2N, P=2,8N, ds=7500kg/m3=7,5g/cm3, dw=1g/cm3, g=10m/s2
szukane dx
Q - P = Fw = dx*g*V......Q = ds*g*V......V = Q/g*ds
Q - P = dx*g*Q/g*ds = dx*Q/ds
dx = [Q - P]*ds /Q = 0,4N*7,5g/cm3 //3,2N = 0,9375g/cm3 ~~0,94g/cm3

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