Answer
Kuroba bibaho mugihe impeta igumana ikorewe imitwaro itera inkombe ya groove guhinduka plastike. Nkuko urukuta rwa groove rutanga umusaruro, rukora igitambambuga cyangwa 'radiyo', kandi impeta itangira kugoreka cyangwa 'isahani' mugihe $ M = P \ inshuro (ukuboko kwi lever) $. Inguni yisahani $ \ phi $ iringaniza numutwaro washyizweho kandi ugereranije nu mpeta ya torsional ikomeye. Iyo inguni imaze kurenza agaciro gakomeye (mubisanzwe dogere 10-15), impeta ntishobora kuba igizwe na groove kandi izananirwa na 'scalloping' cyangwa gusohora. Kugirango ugabanye ibi, imfuruka ya radiyo hepfo yigitereko igomba kubikwa kugeza byibuze (mubisanzwe $ <0.1 \ inshuro d $), naho 'abutment' cyangwa ibice byo gushyingiranwa bigomba kugira imfuruka ityaye kugirango bigabanye ukuboko kwingingo zumutwaro washyizweho.
