Trickster7969 Trickster7969 16-02-2024 Physics contestada Assume that σ_m = 0. If σ_a = 500MPa is applied for 8000 cycles, for how many additional cycles can σ_a = 400MPa be applied?a) 10000 cyclesb) 12000 cyclesc) 14000 cyclesd) 16000 cycles