锟竭匡拷锟斤拷锟斤拷锟斤拷锟絵锟絝锟杰癸拷式

锟斤拷源锟斤拷锟斤拷锟斤拷锟絎(w锟斤拷ng) 2021-12-02 20:13:24

[锟斤拷(bi锟斤拷o)锟斤拷锟斤拷锟竭匡拷锟斤拷锟斤拷锟斤拷锟斤拷知锟絉锟絚]

锟斤拷锟斤拷锟竭匡拷锟斤拷锟斤拷試锟斤拷锟斤拷一锟斤拷锟斤拷3锟斤拷锟斤拷锟絵锟斤拷锟斤拷要锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絵锟斤拷锟斤拷要锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟绞斤拷锟斤拷锟斤拷锟叫★拷锟斤拷锟斤拷锟斤拷锟揭恍╋拷呖锟斤拷锟斤拷锟斤拷锟斤拷}锟叫碉拷锟絝锟杰癸拷式锟斤拷希锟斤拷锟杰夛拷锟斤拷锟斤拷锟揭ｏ拷

锟斤拷锟斤拷1锟斤拷锟斤拷锟絝锟杰癸拷式锟斤拷锟結(ji锟斤拷)

锟斤拷锟斤拷1.锟脚感戯拷(y锟斤拷ng)锟斤拷锟斤拷锟斤拷锟矫侊拷锟斤拷示锟脚堬拷锟侥忥拷锟斤拷锟酵凤拷锟斤拷锟斤拷锟斤拷锟斤拷锟�,锟斤拷矢锟斤拷锟斤拷锟斤拷位:(T),1T=1N/A?m

锟斤拷锟斤拷2.锟斤拷锟斤拷锟斤拷F=BIL;(注锟斤拷L⊥B) {B:锟脚感戯拷(y锟斤拷ng)锟斤拷锟斤拷(T),F:锟斤拷锟斤拷锟斤拷(F),I:锟斤拷锟斤拷锟斤拷锟�(A),L:锟斤拷(d锟斤拷o)锟斤拷锟絃锟斤拷(m)}

锟斤拷锟斤拷3.锟斤拷锟狡濓拷锟絝=qVB(注V⊥B);锟絴(zh锟斤拷)锟絍锟絰锟斤拷見锟节讹拷锟斤拷P155锟斤拷 {f:锟斤拷锟狡濓拷锟�(N)锟斤拷q:锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷(C)锟斤拷V:锟斤拷锟斤拷锟斤拷锟斤拷俣锟�(m/s)锟斤拷

锟斤拷锟斤拷4.锟斤拷锟斤拷锟斤拷锟斤拷锟皆诧拷計(锟斤拷锟斤拷锟絔锟斤拷锟斤拷)锟斤拷锟斤拷r锟斤拷,锟斤拷锟斤拷锟斤拷锟斤拷M锟斤拷艌锟斤拷锟斤拷\锟斤拷锟斤拷r(锟斤拷锟秸兩種)锟斤拷

锟斤拷锟斤拷(1)锟斤拷锟斤拷锟斤拷锟斤拷锟狡斤拷写艌锟斤拷锟斤拷锟斤拷M锟斤拷艌锟�:锟斤拷锟斤拷锟斤拷锟狡濓拷锟斤拷锟斤拷锟斤拷锟�,锟斤拷锟斤拷锟斤拷直锟斤拷锟絓锟斤拷V=V0

锟斤拷锟斤拷(2)锟斤拷锟斤拷锟斤拷锟斤拷卮锟街憋拷艌锟斤拷锟斤拷锟斤拷M锟斤拷艌锟�:锟斤拷锟斤拷锟劫圓锟斤拷锟絓锟斤拷,規(gu锟斤拷)锟斤拷锟斤拷锟斤拷:(a)F锟斤拷=f锟斤拷=mV2/r=mω2r=mr(2π/T)2=qVB;r=mV/qB;T=2πm/qB;(b)锟絓锟斤拷锟斤拷锟斤拷锟絚锟紸锟斤拷锟絓锟接的半徑锟酵撅拷锟劫度無锟絇(gu锟斤拷n),锟斤拷锟狡濓拷锟斤拷锟斤拷锟斤拷锟斤拷锟接诧拷锟斤拷锟斤拷(锟轿猴拷锟斤拷r锟斤拷);(c)锟斤拷锟絵锟絇(gu锟斤拷n)锟絀:锟斤拷軌锟紼锟斤拷锟揭圓锟斤拷锟斤拷锟斤拷锟诫徑锟斤拷锟紸锟侥斤拷(=锟斤拷锟斤拷锟斤拷锟叫斤拷)锟斤拷

锟斤拷锟斤拷2锟竭匡拷锟斤拷锟斤拷锟斤拷锟絵锟斤拷锟絵锟斤拷锟斤拷

锟斤拷锟斤拷1锟斤拷锟斤拷锟斤拷}一锟斤拷锟斤拷锟斤拷锟斤拷锟絵锟斤拷锟斤拷锟紻锟絵锟斤拷锟斤拷式锟斤拷锟紽(xi锟斤拷n)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷}锟斤拷锟斤拷(sh锟斤拷)值锟斤拷锟斤拷位锟斤拷锟斤拷锟斤拷锟斤拷锟截撎栵拷锟斤拷锟�(y锟斤拷ng)锟斤拷全锟斤拷;锟斤拷锟斤拷锟斤拷锟紻锟絵锟斤拷锟劫岋拷锟斤拷锟斤拷(sh锟斤拷)锟紻锟斤拷(y锟斤拷ng)注锟斤拷锟絭锟斤拷锟組锟絊锟斤拷示锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷位锟斤拷锟斤拷(bi锟斤拷o)锟饺硷拷锟斤拷锟斤拷(bi锟斤拷o)原锟絚锟斤拷锟节岋拷電學(xu锟斤拷)锟斤拷锟斤拷D锟斤拷锟絫電憋拷锟斤拷锟斤拷锟斤拷锟斤拷負锟絆锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷(n锟斤拷i)锟斤拷锟斤拷臃锟�锟斤拷變锟斤拷锟斤拷锟接凤拷锟斤拷锟斤拷锟斤拷锟絴锟絕位锟矫讹拷锟斤拷(y锟斤拷ng)锟斤拷锟絔锟斤拷全锟斤拷锟桔岋拷锟斤拷路锟紻锟斤拷锟斤拷漏锟斤拷锟絕锟斤拷要锟斤拷锟絖使锟斤拷虛锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絅锟絰锟斤拷锟斤拷锟絰锟斤拷锟斤拷锟絰锟斤拷(sh锟斤拷)一锟斤拷要注锟斤拷锟斤拷效锟斤拷(sh锟斤拷)锟街和嗭拷位;锟斤拷锟斤拷锟紹锟接圖一锟斤拷要锟饺拷锟斤拷锟铰凤拷D(锟絰锟斤拷位锟斤拷要锟斤拷锟斤拷(y锟斤拷ng));锟斤拷锟絅锟斤拷锟紻锟斤拷锟紹锟斤拷要锟斤拷锟斤拷锟経锟絇(锟斤拷锟斤拷锟斤拷锟睫革拷),锟斤拷锟斤拷煤锟缴拷锟斤拷止P涂锟斤拷锟斤拷

锟斤拷锟斤拷2锟斤拷锟給論锟斤拷锟斤拷悉锟絵锟斤拷還锟斤拷锟斤拷锟斤拷锟絵锟斤拷锟斤拷锟斤拷要锟侥岋拷锟絵锟絖始锟斤拷全锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷^锟教ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷模锟斤拷锟斤拷锟叫旓拷锟斤拷循锟斤拷規(gu锟斤拷)锟斤拷锟斤拷锟斤拷順斤拷锟絵思路锟斤拷锟絰锟斤拷锟斤拷}锟斤拷锟斤拷锟斤拷锟截別锟斤拷锟狡猴拷锟斤拷锟絕锟斤拷見锟絕锟斤拷“锟斤拷锟斤拷锟�”锟斤拷锟絈锟斤拷锟斤拷锟斤拷锟絕锟杰旓拷锟斤拷锟斤拷锟斤拷只要锟斤拷锟斤拷锟侥勶拷锟斤拷锟結(ji锟斤拷)锟斤拷锟酵曪拷锟斤拷然锟斤拷同锟斤拷

锟斤拷锟斤拷3锟斤拷注锟截岋拷锟絵锟斤拷锟筋究锟斤拷锟斤拷锟斤拷锟紺锟絕全锟斤拷锟斤拷锟絚锟斤拷锟斤拷锟斤拷锟节掘并戯拷(y锟斤拷ng)锟斤拷锟絒锟斤拷锟絣锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絵思路锟斤拷锟斤拷锟給锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絇(gu锟斤拷n)锟絀锟斤拷通锟斤拷锟斤拷锟絒锟斤拷锟絣锟斤拷锟斤拷通锟絕锟絕锟斤拷锟斤拷锟斤拷锟紽(xi锟斤拷n)锟斤拷锟斤拷锟絁锟絉锟斤拷锟斤拷模锟酵和凤拷锟斤拷锟斤拷锟斤拷锟絕锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷試锟絵锟斤拷锟斤拷锟斤拷锟斤拷锟絞锟斤拷D锟斤拷锟斤拷去锟节撅拷锟斤拷

锟斤拷锟斤拷4锟斤拷锟杰凤拷锟酵猴拷锟斤拷锟絰取锟筋優(y锟斤拷u)锟解法锟斤拷锟斤拷锟斤拷锟斤拷}锟斤拷锟斤拷取锟竭分碉拷锟絇(gu锟斤拷n)锟絀锟斤拷锟截別锟斤拷锟斤拷锟杰匡拷試锟絩锟絞锟斤拷锟狡碉拷锟斤拷r锟铰革拷锟斤拷(y锟斤拷ng)锟斤拷恕锟斤拷@锟斤拷要锟斤拷锟揭傦拷锟斤拷锟斤拷锟斤拷锟捷碉拷思锟絊锟斤拷锟斤拷锟斤拷锟届練锟侥斤拷锟絵锟斤拷锟斤拷锟斤拷锟节短時锟絞锟斤拷(n锟斤拷i)锟組锟斤拷锟斤拷锟矫★拷锟斤拷锟絕锟斤拷锟絰锟斤拷锟斤拷锟斤拷锟絈锟斤拷锟斤拷锟斤拷(d锟斤拷ng)然锟斤拷锟斤拷锟斤拷平锟絩锟侥斤拷锟絵訓(x锟斤拷n)锟斤拷锟斤拷锟組锟斤拷锟杰地讹拷锟斤拷脦追N锟解法锟斤拷锟斤拷锟斤拷锟絖锟斤拷锟揭傦拷锟侥斤拷锟絵思路锟角非筹拷锟斤拷锟斤拷锟�锟斤拷