锟斤拷什么锟斤拷锟劫讹拷越小越锟斤拷锟阶伙拷锟斤拷?

锟斤拷源锟斤拷锟絎(w锟斤拷ng)锟絡锟斤拷锟斤拷 2020-09-06 14:37:21

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锟斤拷锟斤拷锟斤拷锟劫讹拷變锟斤拷越锟斤拷锟斤拷锟斤拷位锟絩锟絞锟斤拷(n锟斤拷i)锟斤拷锟絕锟侥角度撅拷越锟斤拷锟斤拷么锟斤拷锟劫度凤拷锟斤拷锟阶冿拷锟揭诧拷锟皆斤拷欤拷锟斤拷俣确锟斤拷锟斤拷變锟斤拷锟斤拷锟角嗭拷位锟絩锟絞锟斤拷(n锟斤拷i)锟斤拷锟絕锟侥角讹拷锟斤拷也锟斤拷锟斤拷锟角傦拷锟紸锟侥角ｏ拷锟斤拷锟斤拷诮o锟斤拷锟斤拷一锟斤拷锟紸锟斤拷锟絓锟接碉拷锟斤拷锟絯锟较ｏ拷锟斤拷锟劫度凤拷锟斤拷锟阶冿拷锟皆斤拷锟�锟斤拷锟斤拷锟劫度碉拷變锟斤拷锟斤拷越锟斤拷锟斤拷也锟斤拷锟角斤拷锟劫讹拷變锟斤拷.v锟斤拷w·R锟斤拷锟斤拷锟皆撅拷锟劫讹拷變锟斤拷

锟斤拷锟斤拷1知锟絉锟斤拷展

锟斤拷锟斤拷锟紸锟侥斤拷θ越锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥圓锟斤拷锟侥伙拷锟絃越锟絃锟斤拷锟斤拷锟竭筹拷锟斤拷锟斤拷.锟斤拷丝锟斤拷锟斤拷没锟斤拷L锟絚锟诫徑锟侥憋拷值锟斤拷示锟角的达拷小锟斤拷

锟斤拷锟斤拷锟斤拷锟界，锟斤拷锟絃锟斤拷0.12m锟斤拷锟诫徑锟斤拷0.1m锟斤拷锟斤拷么θ=0.12m÷0.1m=1.2锟斤拷锟斤拷锟絃锟絚锟诫徑锟侥嗭拷位锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷計锟斤拷锟斤拷锟街拷葧r要锟斤拷锟斤拷.锟斤拷锟剿憋拷锟斤拷锟侥凤拷锟姐，锟揭傦拷“锟給”θ一锟斤拷锟斤拷位锟斤拷锟斤拷锟斤拷锟斤拷锟矫凤拷號rad锟斤拷示锟斤拷锟紷锟斤拷锟斤拷锟斤拷锟斤拷計锟斤拷玫锟斤拷慕锟�θ锟斤拷锟斤拷1.2锟斤拷锟斤拷锟斤拷記锟斤拷θ=1.2rad锟斤拷锟斤拷位锟狡的嗭拷位锟斤拷rad锟斤拷锟斤拷锟劫度的嗭拷位锟斤拷s-1锟斤拷rad/s锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟劫讹拷锟斤拷矢锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絫锟斤拷锟斤拷拇指锟斤拷锟斤拷锟�ω锟斤拷锟斤拷.锟斤拷锟絴(zh锟斤拷)锟絚锟斤拷锟斤拷r锟斤拷锟斤拷D(zhu锟斤拷n)锟絩锟斤拷ω锟斤拷锟斤拷锟斤拷锟斤拷順時锟斤拷锟斤拷D(zhu锟斤拷n)锟絩锟斤拷ω锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷矢锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷φ锟酵斤拷位锟斤拷Δφ锟斤拷锟斤拷矢锟斤拷锟斤拷锟斤拷Δt→0锟斤拷锟絫锟斤拷位锟斤拷Δφ锟斤拷锟斤拷锟絆锟斤拷锟斤拷锟絈锟斤拷o锟斤拷小锟斤拷位锟斤拷锟斤拷锟給锟斤拷小锟斤拷位锟狡猴拷锟皆革拷锟紸锟給锟紽小锟斤拷锟斤拷Q锟斤拷微锟街斤拷位锟狡ｏ拷記锟斤拷dφ.锟斤拷锟斤拷锟紺锟斤拷锟斤拷dφ锟斤拷矢锟斤拷.锟組锟斤拷锟斤拷锟斤拷锟劫讹拷ω=dφ/dt也锟斤拷矢锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟劫讹拷ω锟角傦拷矢锟斤拷锟斤拷锟斤拷锟斤拷系锟侥烇拷锟斤拷锟斤拷系锟絩锟斤拷锟斤拷锟劫度凤拷锟斤拷.锟戒本锟絴(zh锟斤拷)锟角讹拷锟紸锟斤拷锟斤拷锟斤拷Ω锟斤拷锟斤拷锟斤拷一锟斤拷矢锟斤拷锟侥憋拷锟絴(zh锟斤拷)锟斤拷一锟紸锟斤拷锟斤拷锟斤拷锟斤拷锟�锟斤拷矢锟斤拷锟角斤拷锟劫度的猴拷锟斤拷锟斤拷_锟斤拷锟斤拷锟斤拷锟角斤拷锟劫度的準確锟斤拷锟絖锟斤拷

锟斤拷锟铰高匡拷锟結訊锟斤拷锟竭匡拷锟斤拷锟斤拷锟斤拷锟斤拷前锟绞備、志愿锟斤拷锟�锟斤拷锟饺★拷謹锟�(sh锟斤拷)锟斤拷锟斤拷

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