The beam shown was originally constructed by a $400mm200mm$ wood with a modulus of

elasticity $E_w=20$GPa. The allowable axial stresses for the wood are ${}_{wt\text{a}\text{l}\text{l}}=3\mathrm{.}50$MPa for tension

and ${}_{wc}$ all $=25$MPa for compression

Design the steel plate reinforcements if steel has a modulus of elasticity $E_{st}=200$GPa

with an allowable axial stress ${}_{st\text{a}\text{l}\text{l}}=240$MPa for both tension and compression.

Find the maximum shearing stress in the steel and the maximum shearing stress in the

wood.

Please solve both parts! Thank you!