1板、塊的相對(duì)運(yùn)動(dòng)例v0v02木板受牽引的板塊問題例L12F0力FFF例BmA以0BAAB給BAA與Bμ，AABFAv0BFABFF也物塊受牽引的板塊問題例lMmvFv4斜面上的板塊問題v0mm12v0v0tan（tantan5多對(duì)象板塊問題例（1m21取A11AAAAABB后，BBB1A動(dòng)BABAABBA多過程板塊問題例|7ABBFa2BAm和BmABAB數(shù)B12g取AaAPA到B；3B分析物體所受的摩擦力FkP1.03.0FmMFLv02為v0v0l邊12aAaB1.2011·m1m2t=ka和a12a和a）12Cm有B2vB兩物塊的初速度分別為v、，00C0為為C跟3ML1.4m。mLMvm12v0.2g10m/s2mFMMtvva12mM。Mlmv（2、l1在Am。AFBAABx取BABBBFBB2hx1222tv0121x2210112m2222處12mg4m/s22·1Mvt0121處200/t122，21v012v2012a1)()a11m1021F021F0F4m/sa2122M1122t22211Emv0.5J22m1m例AB以后，做勻減速運(yùn)動(dòng)，有a2ABFa14m/s2BBt0.25sv0AB115Bx2216A0A17xatm2216BBmABmAABBv1vvvv202aL102aaaABAB：2BB若ABBAB當(dāng)FABBAF3N若FA與BABF例①11vl②122111mgl1Mmg④2122v2vttlvat⑤⑥222222tanmgcosmgsinmaa222ag(cossin)vvg(cossi)v-vatt度vt00xx10212Lxx0122012gcosF212[(m2m)m](vv)vW12102例v01mgR2①2v2②N1RNAmg④11212BBmg⑤112120.6⑥10.5AA上1做減速運(yùn)動(dòng)時(shí)的加速度大小為amg11111Avv11Av101A21AAAA1.0sm/ssBvats②B）tFB1A2ABBBW④W''FNFB1A2ABBBBAB、B'va(tt')t⑦111vt⑧1111mmgx2⑨22212AB2ABAB11.0s3.8ssxxx⑩124am/s23118am/s2322112212atatx又121122t11142atmFx223312FW31vtgvvatgtv000·1vv20xl0t/①②④211221122lx⑤121x2⑥211xatxxl2⑦⑧2211122gaga12121122課后練習(xí)：A．FMma20Nm從M24.7m/s2M11設(shè)m從Mat22220.5m/s21Ma2設(shè)t2v1122t48mx1222121211W2221.5m/sa2，2，21f11122m32f23M12①②11l121v2l③xt④，x22111t⑤2122v2⑥vat⑦2222