Official Answer
Answer
Tsagi mai kaifi (mafi girman radius na $0.005$ inch) ya dace da zoben riƙewa na karkace saboda yana ba da ƙwanƙwasa madaidaiciya wanda ke hana zobe daga 'birgima' ko 'tasa' ƙarƙashin kaya. Idan tsagi yana da babban radius, zoben zai tuntuɓi radius maimakon bangon ɗakin kwana, yana haifar da tasiri. Wannan yana tura zoben a zahiri kuma yana haifar da lokacin murɗawa. Idan radius ya zama dole don ƙarfin gajiyar shaft, ya kamata a yi amfani da 'wanki na baya' tsakanin zobe da ɓangaren radiyo don samar da shimfidar wuri mai faɗi.
