Problem 3 3 A rigid bar ABCD is pinned at end A and

Last updated: 2/8/2023

Problem 3 3 A rigid bar ABCD is pinned at end A and supported by two cables at points B and C see figure The cable at B has nominal cross section area AB 50 mm and the cable at C has nominal cross section area Ac 100 mm A load P acts at end D of the bar What is the allowable load P if the temperature rises by 100 C and each cable is required to have a factor of safety of at least 5 against its ultimate load Note The cables have effective modulus of elasticity E 100 GPa and coefficient of thermal expansion a 10 x 10 C strength of cable B is TB ULT 100 000 N and strength of cable C is TC ULT 230 000 N