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gz = 10 m/s²
zad.1.
Mp = 2Mz
Rp = Rz /2
zad.2.
pp = 2 *pz
Rp = Rz/3
Mz = pz * Vz
V = 4/3 πRz ³
Mz = pz * 4/3 πRz³