Determine the strains for the following four cases. Given:
a) ( σ₁ = 6.895MPa), ( σ₂ = 0), ( τ₁₂ = 0), ( ϵ₁, ϵ₂, γ₁₂ = ? )
b) ( σ₂ = 6.895MPa), ( σ₁ = 0), ( τ₁₂ = ? ), ( ϵ₁, ϵ₂, γ₁₂ = ? )
a. ( ϵ₁ = 6.895 × 10⁻³), ( ϵ₂ = 0), ( γ₁₂ = 0)
b. ( ϵ₁ = 0), ( ϵ₂ = 6.895 × 10⁻³), ( γ₁₂ = 0)
c. ( ϵ₁ = 0), ( ϵ₂ = 0), ( γ₁₂ = 6.895 × 10⁻³)
d. ( ϵ₁ = 6.895 × 10⁻³), ( ϵ₂ = 6.895 × 10⁻³), ( γ₁₂ = 0)