Answer Happy

A horizontal beam of length, L, is fixed at one end and loaded with a linearly increasing distributed load of maximum value, po​ and length, L2​, and a sinusoidal distributed load of maximum value, qo​ and length, Li,​ as shown in Figure 2. What would the value of p0​ need to be in order to produce a net zero moment at the fixed end, i.e., for the moment due to the linearly increasing distributed load and sinusoidal distributed load to cancel each other out? Assume that L=8 m,Lt​=2.5 m,L2​=2.5 m, and q0​=1000 N⋅m−1. (4 marks) Figure 2: Cantilever beam with a linearly increasing distributed load and sinusoidal distributed load. A thin square plate of width, w=200 mm, is made from steel with a yield strength of, σy​=800MPa, and contains a hole of radius, r=27.5 mm, at its centre. If the plate is subjected to a tensile stress, σ=280MPa, parallel to the plate edge then what will be the maximum residual stress at the edge of the hole upon unloading?