Final answer:
The maximum shear stress can be calculated using the formula σmax = √(σx^2 + σy^2), where σx is the tensile stress and σy is the compressive stress.
Step-by-step explanation:
The maximum shear stress in this case can be calculated using the formula:
σmax = √(σx2 + σy2)
where σx = 20 kN/m² (tensile stress) and σy = 10 kN/m² (compressive stress).
Plugging in the values, we get:
σmax = √((20 kN/m²)2 + (10 kN/m²)2)
σmax = √(400 kN/m² + 100 kN/m²)
σmax = √(500 kN/m²)
σmax ≈ 22.36 kN/m²