Answer
Imbaraga 'kwizirika' nigitutu cya radiyo impeta ikora munsi yigitereko, ikemeza ko itazunguruka cyangwa ngo yinyeganyeze. Nibikorwa bya 'Diameter Yubusa' ($ D_f $) kuba nto kurenza 'Groove Diameter' ($ D_g $). Umuvuduko wa radiyo $ q $ utangwa na $ q = \ frac {E I (D_g - D_f)} {R ^ 2 D_g D_f} $. Kubera ko $ I = \ frac {b t ^ 3} {12} $, imbaraga zifatika ziragereranywa na cube yubunini bwibintu $ t $. Kubisabwa hamwe no kunyeganyega cyane (urugero, kohereza ibinyabiziga), impeta nini cyangwa 'nini-munsi' kuri $ D_f $ irasabwa kongera cling. Ariko, ibi kandi byongera imbaraga zo kwishyiriraho $ \ sigma = \ frac {E t c} {2 R ^ 2} $, aho $ c $ aribwo kwaguka kwa radiyo bisabwa. Abashushanya bagomba gukemura ibyo bingana kugirango barebe ko impeta igumaho nta gufotora mugihe cyo guterana.
