2021中物浮、強(qiáng)機(jī)滿訓(xùn)營(yíng)第9節(jié)

杠桿及平條件內(nèi)容導(dǎo)航例題演練題組1：杠的分類例．A

B

C

D

AABBCCD

練1.1ABCDAA錯(cuò)BBCDD題組2：力臂的畫(huà)例．AlOF

練2.1LOFL題組3：最力問(wèn)題例．ABCAABCACACACFFAC

練3.122練3.2AFGFAOAAOA

1211212112112121OA22OB21題組4：動(dòng)態(tài)平衡題例．AOBOAOAGAOBFBOBFAF

BF

CFF

DAOFLGLFG2OBFLGLGLLFGFF練4.1GO

112112121ACF

BDFFAFlFlFCD練4.2FAAC

BDLLGLF練4.3FOAAF

AC

BDOAOBGFOAGOBOA''OA''OAcosOB''OBcosF'OAcosOB題組5：杠桿的平實(shí)驗(yàn)例．1

121212112121212A3B2LFLAAB3FF

F42A3FF4A練5.11O2AB33BC

12111211221211121112112212113224BmEBL

OBLm

桿

2LGFll2G3L2LA33OC4ELBLLLmL桿Lm桿3OB題組6：杠桿的綜運(yùn)用例．OOB3OA10cm

桿AB30NF90NFBF610Pa20N

11121223123NANA11121223123NANAN2A2B0LLGOAOBGOA3OAG90N2OBC30LOBPaFpSPa0.1mFGFGF60N30NFLFOAOB30NOB20N

2﹣22AEEEAA52﹣22AEEEAA590練6.1A8.010﹣2

OEOH12600N10N/kg1A2A0.2m340J3AAG10N/kg1400N2Gh1400NG300N總動(dòng)動(dòng)動(dòng)3A600N人OHFOEF

D2F300NA1400N動(dòng)1400N4F+300N1700N4FAP人F250NA1400N23A250N練6.2．6.010

5551211215﹣42﹣655551211215﹣42﹣65163623333AOOAOB2AB80N2.0p6.010PaF80NOA1pOB4S410mVmG10Pam240N

310kg/mkg/m例．ACBB10cmg10N/kg10kg/m2.010kg/mC水CV

131232332A2AA22A233A131232332A2AA22A233AAA33﹣3AAAA12AG3BBp0.06m6cm2V600cmCAV容V

600cm

300cm

CA0.21m21cmAhVSSA水容80cm容AV1200cmmAV2.010kg/m2.4kgAGg10N/kg24N3300PaAG24NB右pB

﹣4BBBBB﹣4BBBBBBBBB﹣43323313Fpm12NBGmg6kg10N/kg60NFGF60N12N48N左LFL左左右右BFS1010m28NFGF60N28N32N左LFL左左右右F右

F16N左AFG24N16N8N浮右FA浮排V8m800cm排A浸VhV800cm注水容浸排600Pa6cm2A24N3B28000Pa

32﹣3232﹣3233333BABABB練7.1．OAB80N110m20kg4mOA1mg12B341VV10m排乙FρgV1.0kg/m1m10N浮水排2FB浮拉F80N10N70N乙浮3FOAFOBAF

F270NFFmgF20kg60N壓支甲拉甲4

33h0.25mpeq\o\ac(△,g)1kg/m0.25m2500Pa水2B31500Pa4練7.2．A1A231ABAAFG浮水浮甲FFF浮水壓水浮水壓甲水壓甲壓pp水壓甲壓2AFG浮水浮甲

3333333AAAABAB21213333333AAAABAB2121AAA33A3gV水

甲

1Vkg/mkg/m甲水

110kg/m10k