A shell acquires the initial velocity \( v=320 \mathrm{~ms}^{-1} \), having made \( n=2.0 \) tur...

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A shell acquires the initial velocity \( v=320 \mathrm{~ms}^{-1} \), having made \( n=2.0 \) turns inside the barrel whose length is equal to \( l=2.0 \mathrm{~m} \). Assuming that the shell moves inside the barrel with a uniform acceleration, find the angular velocity of its axial rotation at the moment when the shell escapes the barrel.
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