高考物理力學計算題(二十二)含答案與解析

1、高考物理力學計算題二十二含答案與解析405m/s2m/smAF1m/sgFF2mmABALmAB5m/sgoABAmABABAB3mmAABBCR。EEFmABCh4m/sEBCh2mEFLBCBmA4m/sBmBBCF1m/s2m/s4m/s8m/sLgAACABBABACm，細線ACl1m，細線ABlgABACACBBLBmB2mA6m/sBBABABABgABABB5mABALBm4m/sFgABABmAmB，（g），求：ALmFFgF5m/smL1mL塊（取gLABBCmBBgFABLBBABABmBRBRBCBmA2m/sBgAB2m/smg3m/shAmABmBL1mmCBBBAB

2、A6m/sBgBBAmAhAhEpABAABB2m/s點。已知BhhLABABAhRAhhabdeR3mdBmq點（abRReqoac(,q)AB4mBCILLBCBAmqB點。（ABBBCABABABCh6mBCdEFhmAABBgB8m/sBCmFmgRRABBABq+2mBEBABBgBdeLRBabmababbabababababdeABBRmBgBmRm2mAAgABABRBCABBBCl質BCEmEBBm高考物理力學計算題二十二含答案與解析參考答案與試題解析405m/s解：（m/smmm+a+mmm答：（3m/s2m/smAF1m/sgFFp解：（AFmaF2m/spFma故：（F

3、F2mm解：（2m2m+mE+2m+mv答：（+ABALmABABABA解：（ABEABACAAhAAAm+MC+Am+M答：（AB5m/sghmhhgt5m/soABAmABABAB解：（+ma+m5mBma2m/sBLAB+AB+teqoac(,x)1m5m5m5meqoac(,x)LABeqoac(,x)1m1meqoac(,L)5mABLAB答：（ABAB5mAB3mmTmgTmgmgFM+mg答：（mgmgAABBCR。EEFmABCh4m/sEBCh2mEFEEF解：（E+mgEF+mgmFFF4m/smmghEhEhE+mghhREF答：（EmEFLBCBmA4m/sBmBBCF

4、ABF解：（BAB+mBFFmgmFFFEE+mEmgmEEmgEEE+mBm5m/sm答：（F1m/s解：（Fm8m/s1m/s8m/s4m+t8m/s4mLLL4mmgmaL1m/sMg2m/s4m/s8m/sLg解：（+atLL+tgm/sm/sAACABBABACm，細線ACl1m，細線ABlgABACACABACABAC解：（ABACmlAdABACmgtanmlAlABACACBBLBmB2mA6m/sBBABABABgABABBABCBCBBCm+m+2mCm+m+2mg4mg4mAA2mg8mACAABm+mACgBLABAAA4m/sBB1m/s2mA+mvB2mA+mvBA

5、2m/sB5m/sA，則：mgmgmaB+aAAAAmgmg3maABBBBBB答：（AB4m/s1m/sAB2m/s5m/sBAB5m+1m/s答：（ABALBm4m/sFg解：（Fma2m/sm4m4mABABmAmB，（g），求：ABA解：（mBgFFAATmAA答：（ALmFFg解：（FFFFmam/sm/sm/st+LL8m答：（m/sF5m/smL1mL塊（取gLn解：（FMgFFFFFMgM+mgFLm/snLLnL1+2+3+n）Lnn答：（Lm/sABBCmBBg）質量為m）質量為m6m/sABFABFmaFFBB1m/s6m/s5m/sLAB2m答：（F6m/sAB2mLB

6、BABABmBRBABABCABCABAAA解：（ABABCABCABAAAA答：（BRBCBmA2m/sBgABABBABBB解：（BB4m/sBmCmBCmgmC答：（AB2m/smg解：（mFmaFmm答：（3m/sh解：（hgtm/sFmgFmagm/s答：（AmABmBL1mmCBBBABA6m/sBgBBABBABBBBBCB解：（ABBABmAmAA+mBBB4m/sBBBBBBmBBmB+mCCCmCmBBmB+mCC答：（B4m/sBABBAmAhAhEp解：（mgmghhh+hmghpmgAm答：（AmABAABB2m/s點。已知BhhLABABAAB解：（ma8m/sAB

7、A6m/sLh1m/smghh+W答：（AB8m/sA6m/s1m/shRAhh解：（hRFmghmgsF答：（habdeR3mdBmq點（abRReqoac(,q)解：（mm+3m金屬棒切割磁感線的過程中，棒和小球的動能轉化為電能進而轉化成焦耳熱：答：（RRAB4mBCILLBCBAmqB點。（ABB解：（ABLAB2m/smaEBC+maILL5m答：（ABB5mBCBCABABABCh6mBCdEFhmAABBgB8m/sBCmABB解：（ABmghBmgh8m/sm/s6m/sm/sm/sBCmm答：（BmF解：（Fmama+a答：（mgh解：（hhhhhhmgma5mg答：（hRRABBABABCAABmRm/sABmR+Rmm/sCAABABA+A+t+t+m/sABAB+q+2mBEBABBgBABBBB解：（A+mvB+A5m/sBABBBBBB5m/sgtBEkBEkB+AB+mv+mv+3m+m）3mmABABAB答：（5m/sBdeLRBabmababbabababababdeEBLvbab解：（bababEmBLvIabIRFBILabm+M+Qded答：（abababdeABBRmBgBBB解：（BmgmBCBEpEpBmgmEpEpEpBjEpEp