The S-N curve for the motor shaft's material is given below. If 10⁵ striations were counted on the fractured surface of the specimen using an automated, machine learning guided scanning electron microscope, what stress amplitude did the shaft likely experience? (Note: 1 striation is the progression of the crack after 1 cycle). /

Die S-N-kromme vir die motoras se materiaal word hieronder gegee. As 10⁵ groewe op die gebreekte oppervlak van die monster getel is met behulp van 'n outomatiese, masjienleer-geleide skandeerelektronmikroskoop, watter spanningsamplitude het die as waarskynlik ervaar? (Let wel: 1 groef is die vordering van die kraak na 1 siklus).