a cable connecting two carts has a 0.25 inch diameter and is made of steel of yield strength 35 kpsi, a modulus of elasticity of 30 mpsi, modulus of rigidity of 12 mpsi, and poisson ratio of 0.3. what's the maximum force (in lbf) that can be applied to the cable before it yields? a cable connecting two carts has a 0.25 inch diameter and is made of steel of yield strength 35 kpsi, a modulus of elasticity of 30 mpsi, modulus of rigidity of 12 mpsi, and poisson ratio of 0.3. what's the maximum force (in lbf) that can be applied to the cable before it yields?