Answer
Impera ya Shim itanga ubuso bwa dogere 360 igereranije, itandukanye nimpera zisanzwe zihuza gusa igice cyo guhuza impinga yumuraba. Isaranganya ryumutwaro rigabanya umuvuduko woguhuza $ P_c = Imbaraga / Agace $ kubice byo gushyingiranwa, nibyingenzi mugihe igice cyo gushyingiranwa gikozwe mubintu byoroshye nka aluminium cyangwa plastike. Shim irangiza kandi ikuraho icyerekezo cya 'wave peak' gishobora kugaragara mugihe, bigatuma uburebure bwakazi butajegajega kandi bikabuza amasoko 'gucukura' no gukora imyanda yo kwambara (fretting) mubiterane byuzuye.