\(\left\{{}\begin{matrix}F_1=P_1=300000N\\F_2=P_2=15000N\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}p_1=\dfrac{F_1}{S_1}=\dfrac{300000}{1,5}=200000\left(N/m^2\right)\\p_2=\dfrac{F_2}{S_2}=\dfrac{15000}{0,02}=750000\left(N/m^2\right)\end{matrix}\right.\)