Why are steel i-beams used for skyscrapers and not wooden beams? Please help only a few more hours!!

i-beams are the choice for structural skyscrapers because of their high functionality.

the shape of i-beams makes them excellent for unidirectional bending parallel to the web.

the horizontal flanges resist the bending movement, while the web resists the shear stress.

                                           ♡  hope this helped!  ♡

answer; the correct answer is technician a; ///100%good luck

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.