Use the static friction formula.
[tex]\begin{gathered} \mu_s=\frac{F}{mg}=\frac{30N}{9\operatorname{kg}\cdot9.8\cdot\frac{m}{s^2}} \\ \mu_s=0.34 \end{gathered}[/tex]Therefore, the coefficient of static friction is 0.34. The angle of friction would be 180 because it's opposite to the direction of the movemNo ent.
