(Solved):   On a certain mean the rolling load for a \( 30 \% \) reduction of is \( 7.6 \mathrm{kN} / ...

 

On a certain mean the rolling load for a \( 30 \% \) reduction of is \( 7.6 \mathrm{kN} / \mathrm{mm} \) of width what is the reolling load when back tension \( 155 \mathrm{mpa} \) and fornt tension is \( 125 \mathrm{MPa} \) are applied assumed that \( \sigma_{0}^{\prime}=540 \mathrm{MPa} \)