Answer
Ƙwayoyin ɗorawa na waje suna iyakance ta ikon su don 'manne' ga tsagi a cikin babban sauri. Ƙarfin Centrifugal yana sa zoben ya faɗaɗa radially. Gudun $N$ wanda zoben zai rasa riko yana ba da $N = ± π \sqrt{\frac{E · g · (D_g - D_i)}{4 · ρ · R_m^3 · (1 + ν)}} $, inda $E$ shine modules, $g$ shine nauyi, $D_g shine $ - diamita $ D_g shine $-groo $ shine $ - diamita $ _ groo Yawan kayan, $R_m$ shine madaidaicin radius, kuma $ν$ shine rabon Poisson. Don aikace-aikace masu sauri, ana amfani da fasalulluka na 'Kulle Kai', inda wani shafi akan juyi ɗaya ya kulle zuwa cikin rami akan ɗayan, ta hanyar injiniyanci yana hana zoben faɗaɗawa. Wannan yana ba da damar zobe yayi aiki a RPMs mai nisa wanda ya wuce iyakar ƙa'idar daidaitaccen zobe.