Find the maximum power which can be transmitted by means of a steel shaft rotating about its axi...

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Find the maximum power which can be transmitted by means of a steel shaft rotating about its axis with an angular velocity \( \omega=120 \mathrm{rads}^{-1} \), if its length \( l=200 \mathrm{~cm} \), radius \( r=1.50 \mathrm{~cm} \), and the permissible torsion angle \( \phi=2.5^{\circ} \).
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