The rigid beam is supported by the three suspender bars. Bars AB and EF are made of aluminum and bar CD is made of steel. If each bar has a cross-sectional area of 450 mm², determine the maximum value of P if the allowable stress is (σ_allow)_st= 200 MPa for the steel and (σ_allow)_al= 150 MPa for the aluminum. E_st= 200 GPa, E_al= 70 GPa.

Transcribed Image Text:

в al al 2 m st 0.75 m 0.75 m'0.75 m 0.75 m' 2P