Official Answer
Answer
Don zoben riƙe da karkace, lokacin inertia $I$ na sashin giciye ana ƙididdige shi azaman $I = \ frac{b \cdot t^3}{12}$, inda $b$ shine faɗin bangon radial kuma $t$ shine kauri. Duk da haka, taurin zoben-ikonsa na yin tsayayya da faɗaɗa ko ƙanƙancewa-ana kuma sarrafa shi ta hanyar ka'idar 'bim mai lankwasa'. Taurin ya yi daidai da $E \cdot I / R^3$. Wannan yana nufin cewa ko da ƙaramar haɓakar bangon radial $ b$ yana ƙaruwa da ƙarfin da ake buƙata don shigar da zobe da ikon kasancewa a cikin tsagi. Dole ne masu zanen kaya su daidaita girman bangon radial $ b$ don tabbatar da zoben yana da ƙarfi don ɗaukar kaya amma mai sauƙi don shigar da shi ba tare da wuce ƙarfin yawan amfanin ƙasa $ \ sigma_y$ yayin fadadawa ba.
