\(\left[\left(-Fm\right)\left(-2.5cm\right)+\left(22.5N\right)\left(12cm\right)+\left(-71.54\right)\left(30cm\right)\right]=0\)
\(\left[\left(2.3\right)\left(12\right)\left(9.8\right)+30\left(7.3\right)\left(9.8\right)\right]=\frac{2416.68}{2.5}=996.67\)
\(Fm=966.67N\)\(\left[\left(-Fm\right)\left(-2.5cm\right)+\left(22.5N\right)\left(12cm\right)+\left(-71.54\right)\left(30cm\right)\right]=0\)