Official Answer
Answer
Yin jita-jita yana faruwa lokacin da zoben ya karkata zuwa siffar conical ƙarƙashin babban lodin axial saboda lokacin da aka ƙirƙira tsakanin wurin aikace-aikacen lodi da goyan bayan tsagi. Wannan nakasar da ba ta da tsari ba tana haifar da canji daga lamba ta ƙasa iri ɗaya zuwa layin layi a gefen tsagi. Danniya na lamba $\sigma_c$ yana ƙaruwa sosai: $\sigma_c = \sqrt{\frac{P \cdot E}{2 \pi R (1-\nu^2)}}$. Wannan babban danniya na gida yana iya ƙetare yawan matsi na kayan tsagi, yana haɓaka 'birgima'. Injiniyoyi suna rage cin abinci ta hanyar zabar zobba masu kauri ko ta amfani da saitunan zobe na 'baya-baya' don ƙara ingantaccen lokacin inertia $I = \ frac{b t^3}{12}$ akan lankwasa axial.
