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1、1-4 在离水面高 h米得岸上，有人用绳子拉船靠岸，船在离岸S 处，如题 1-4图所示当人以0v(m1s)得速率收绳时，试求船运动得速度与加速度得大小图1-4 解：设人到船之间绳得长度为l，此时绳与水面成角，由图可知222shl将上式对时间t求导，得tsstlldd2dd2题 1-4 图根据速度得定义，并注意到l,s就是随t减少得，tsvvtlvdd,dd0船绳即cosdddd00vvsltlsltsv船或svshslvv02/1220)(船将船v再对t求导，即得船得加速度1-6 已知一质点作直线运动，其加速度为a4+3t2sm，开始运动时，x5 m，v=0，求该质点在t10s 时得速度与位置
2、解：ttva34dd分离变量，得ttvd)34(d积分，得12234cttv由题知，0t,00v,01c故2234ttv又因为2234ddtttxv分离变量，tttxd)234(d2积分得232212cttx由题知0t,50 x,52c故521232ttx所以s10t时m70551021102sm190102310432101210 xv1-10 以初速度0v201sm抛出一小球，抛出方向与水平面成幔 60 得夹角，求：(1)球轨道最高点得曲率半径1R；(2)落地处得曲率半径2R文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 H
3、E4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3
4、C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 H
5、E4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3
6、C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 H
7、E4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3
8、C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 H
9、E4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2(提示：利用曲率半径与法向加速度之间得关系)解：设小球所作抛物线轨道如题1-10 图所示题 1-10 图(1)在最高点，o0160cosvvvx21sm10gan又1211vanm1010)60cos20(22111nav(2)在落地点，2002vv1sm,而o60cos2ganm8060cos10)20(22222nav1-13 一船以速率1v30km h-1沿直线向东行驶，另一小艇在其前方以速率2v40km h-1沿直线向北行驶，问在船上瞧小艇得速度为何?在艇上瞧船得
10、速度又为何?解：(1)大船瞧小艇，则有1221vvv，依题意作速度矢量图如题1-13 图(a)文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O
11、3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V
12、7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O
13、3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V
14、7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O
15、3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V
16、7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2题 1-13 图由图可知1222121hkm50vvv方向北偏西87.3643arctanarctan21vv(2)小船瞧大船，则有2112vvv，依题意作出速度矢量图如题1-13 图(b)，同上法，得5012v1hkm2-2 一个质量为P得质点，在光滑得固定斜面（
17、倾角为）上以初速度0v运动，0v得方向与斜面底边得水平线AB平行，如图所示，求这质点得运动轨道解:物体置于斜面上受到重力mg，斜面支持力N、建立坐标：取0v方向为X轴，平行斜面与X轴垂直方向为Y轴、如图2-2、题 2-2 图X方向：0 xFtvx0Y方向：yymamgFsin0t时0y0yv文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7
18、H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3
19、S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7
20、H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3
21、S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7
22、H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3
23、S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C22sin21tgy由、式消去t，得220sin21xgvy2-4 质
24、点在流体中作直线运动，受与速度成正比得阻力kv(k为常数)作用，t=0时质点得速度为0v，证明(1)t时刻得速度为vtmkev)(0；(2)由 0到t得时间内经过得距离为x(kmv0)1-tmke)(；(3)停止运动前经过得距离为)(0kmv；(4)证明当kmt时速度减至0v得e1，式中m为质点得质量答:(1)tvmkvadd分离变量，得mtkvvdd即vvtmtkvv00ddmktevvlnln0tmkevv0(2)tttmkmkekmvtevtvx000)1(dd(3)质点停止运动时速度为零，即t，故有000dkmvtevxtmk文档编码:CD9S1O5O3S3 HE4U7A7D6A6 Z
25、T3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1
26、O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 Z
27、T3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1
28、O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 Z
29、T3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1
30、O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 Z
31、T3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2(4)当 t=km时，其速度为evevevvkmmk0100即速度减至0v得e1、2-10 一颗子弹由枪口射出时速率为10smv，当子弹在枪筒内被加速时，它所受得合力为F=(bta)N(ba,为常数)，其中t以秒为单位：(1)假设子弹运行到枪口处合力刚好为零，试计算子弹走完枪筒全长所需时间；(2)求子弹所受得冲量(3)求子弹得质量解:(1)由题意，子弹到枪口时，有0)(btaF,得bat(2)子弹所受得冲量tbtat
32、tbtaI0221d)(将bat代入，得baI22(3)由动量定理可求得子弹得质量0202bvavIm2-13 以铁锤将一铁钉击入木板，设木板对铁钉得阻力与铁钉进入木板内得深度成正比，在铁锤击第一次时，能将小钉击入木板内1 cm，问击第二次时能击入多深，假定铁锤两次打击铁钉时得速度相同解:以木板上界面为坐标原点，向内为y坐标正向，如题2-13 图，则铁钉所受阻力为文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G
33、3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3
34、HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G
35、3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3
36、HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G
37、3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3
38、HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G
39、3C2题 2-13 图kyf第一锤外力得功为1AsskykyyfyfA1012ddd式中f就是铁锤作用于钉上得力，f就是木板作用于钉上得力，在0dt时，ff设第二锤外力得功为2A，则同理，有21222221dykkyykyA由题意，有2)21(212kmvAA即222122kkky所以，22y于就是钉子第二次能进入得深度为cm414.01212yyy2-15 一根劲度系数为1k得轻弹簧A得下端，挂一根劲度系数为2k得轻弹簧B，B得下端一重物C，C得质量为M，如题 2-15 图求这一系统静止时两弹簧得伸长量之比与弹性势能之比文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8
40、G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3
41、 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8
42、G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3
43、 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8
44、G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3
45、 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8
46、G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2解:弹簧BA、及重物C受力如题2-15 图所示平衡时，有题 2-15 图MgFFBA又11xkFA22xkFB所以静止时两弹簧伸长量之比为1221kkxx弹性势能之比为12222211121212kkxkxkEEpp2-17 由水平桌面、光滑铅直杆、不可伸长得轻绳、轻弹簧、理想滑轮以及质量为1m与2m得滑块组成如题2-17 图所示装置，弹簧得劲度系数为k，自然长度等于水平距离BC，2m与桌面间得摩擦系数为，最初1m静止于A点，A
47、BBCh，绳已拉直，现令滑块落下1m,求它下落到B处时得速率文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 Z
48、T3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1
49、O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 Z
50、T3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1O5O3S3 HE4U7A7D6A6 ZT3V7H8G3C2文档编码:CD9S1