Answer
Ubushobozi bwo gukata impeta $ P_r $ ni umutwaro impeta igumana ubwayo inanirwa no kogosha. Irabarwa nka $ P_r = _x000c_rac {D imes t imes au_s imes ext Fact Factor Umutekano}} {\ phi} $ aho $ t $ nubunini bwimpeta naho $ \ tau_s $ nimbaraga zogosha ibikoresho byimpeta (mubisanzwe $ 0.6 \ inshuro \ inyandiko {imbaraga zingana} $). Impeta yimpeta ihinduka ikintu kigabanya igihe impeta yashizwe mumashanyarazi ikozwe mubikoresho bikomeye cyane (urugero, ibyuma bikomye ibyuma) cyangwa mugihe uburebure bwimpeta ari buto cyane ugereranije nubujyakuzimu. Mu nzu nyinshi 'yoroshye' nka Aluminium cyangwa Carbon Steel isanzwe, igikoni kizatanga umusaruro mbere yuko impeta zishira. Ku kirere 17-7PH impeta, $ \ tau_s $ irashobora kurenga $ 150,000 $ PSI.
