Answer
Kunanirwa kwa Shear, impeta ubwayo yaciwemo ibice bibiri kumuzenguruko. Ubuso bwananiranye buzagaragara nkigice kibengerana, cyahiye gikurikirwa no kuvunika gukabije, byerekana ko impungenge zogosha $ \ tau = P / (\ pi D t) $ yarenze imbaraga zogosha ibikoresho ($ ~ 0,6 \ inshuro UTS $). Groove Yitanga, ariko, irangwa nurukuta rwa groove rusubizwa inyuma cyangwa 'kuzunguruka' hejuru. Impeta irashobora kuguma idahwitse ariko izahinduka 'dished' cyangwa ihindurwe. Kwipimisha biroroshye: niba igikonjo kigikarishye kandi mubyihanganirana ariko impeta iragoswe, ibikoresho byimpeta ntibyari bihagije. Niba igikonjo cyahinduwe kandi impeta 'isohoka', ibikoresho byo munzu byari byoroshye cyane cyangwa igikonjo nticyari gito kuburyo umutwaro washyizweho.
