[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fJgg7WWQ98vvpSUB5zt5F34wKnRSCWx_yV-QWaYPFTng":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2023-12-30 04:43:11",124167804,[8,9,10,11],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fedcad94779f0ae17fe1a0e219c84bb46.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe01b3af114ea4c0a8f47c33b4ea98aa6.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4f7b5049f6381924924f776425b1d80d.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdf77b5847e3cec3c293ec70522dee12e.png\">",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},10,"48c7390e26eb0a255dd5c7606dd378ae","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffb4a296cc3b1406cb1375b094df59c56.jpg","工程力学","7a6198c0262a4a2f88b8a48c033dd711","动力学基本定理-测验","【单选题】图示均质圆盘重P,半径为r,圆心为C,绕偏心轴O以角速度w转动,偏心距OC=e,该圆盘对定轴O的动量矩为( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fda716e4c8927611f1702a6a7bdfa71a6.png\">",[21,33,42,51,60,63,72,81,91,100],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2023-12-30 04:43:10",124167793,[26,27,28,29],"必然相同","也可能不相同","只有在运动初始条件相同的条件下才会相同","在运动初始条件相同时也可能不相同","【单选题】质量相等的两质点,若它们在一般位置的受力图相同,所选的坐标形式相同,则它们的运动微分方程( )","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],124167796,[37,38,39,40],"B、C三处时,车对该三处路面的压力大小分别为PA、P","、P",",则( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdd79b0d5e0d50eeebdcd983238e0691e.png\">A. PA=PB=PC;B. PB>PA<PC;C. PB<PA>PC","PB<PA<PC","【单选题】设汽车以匀速v通过图示路面",{"answer":43,"createTime":5,"id":44,"options":45,"question":50,"source":31,"type":32},[],124167798,[46,47,48,49],"杆倒向地面的过程中,其质心C运动的轨迹为圆弧","杆倒至地面后,xC>0","杆倒至地面后,xC=0","杆倒至地面后,xC<0","【单选题】图示均质杆AB重W,其A端置于水平光滑面上,B端用绳悬挂.取图示坐标系oxy,此时该杆质心C的坐标xC=0.若将绳剪断,则( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9a180918f8dfb031f43d28bfccec1aff.png\">",{"answer":52,"createTime":5,"id":53,"options":54,"question":59,"source":31,"type":32},[],124167801,[55,56,57,58],"质点系的动量必大于其中单个质点的动量","质点系内各质点的动量均为零,则质点系的动量必为零","质点系内各质点的动量皆不为零,则质点系的动量必不为零","质点系的动量的大小等于其各个质点的动量的大小之和","【单选题】试判断以下四种说法中,哪一个是正确的?( )",{"answer":61,"createTime":5,"id":6,"options":62,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":64,"createTime":5,"id":65,"options":66,"question":71,"source":31,"type":32},[],124167806,[67,68,69,70],"B、C的三轴z1、z2、z3的转动惯量分别用Jz1、Jz2、Jz3表示,则( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F560fbd1d174c85c73ee86e08461a9274.png\">A. Jz1>Jz2>Jz3","Jz2> Jz1 >Jz3","Jz1=Jz2>Jz3","Jz1=Jz3+M(L\u002F2)2","【单选题】图示一细棒由铁质和木质两段构成,两段长度相等,都可视为均质的,其总质量为M.此棒对通过",{"answer":73,"createTime":5,"id":74,"options":75,"question":80,"source":31,"type":32},[],124167808,[76,77,78,79],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5cfdcbbf0401912bcc7c7e34b8e65eed.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa80371a8c77a5e274373b39e7dae2022.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4cbc0f288d23af18afc07e7653d67184.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc3ebfb4a1488ef4a8160e9dbd4b9c1af.png\">","【单选题】图示各系统中,哪一种情况的系统所受的约束不是理想约束(即其约束力所作的功的代数和不为零)( )",{"answer":82,"createTime":5,"id":83,"options":84,"question":89,"source":31,"type":90},[],124167810,[85,86,87,88],"Rg=ma0(¬,加在C点),Mg=mRa0\u002F2(逆时针向)","Rg=ma0(¬,加在O点),Mg=mRa0\u002F2(逆时针向)","Rg=ma0(¬,加在O点),Mg=3mRa0\u002F2(逆时针向)","Rg=ma0(¬,加在C点),Mg=3mRa0\u002F2(顺时针向)","【多选题】均质圆轮的质量为m,半径为R,它在水平面上滚动而不滑动,其轮心O的加速度为a0,方向如图所示,C点为轮的速度瞬心.圆轮惯性力系简化的结果是( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7f152b472d2d1bfe1b3b48b28e4592ff.png\">",1,{"answer":92,"createTime":5,"id":93,"options":94,"question":99,"source":31,"type":90},[],124167813,[95,96,97,98],"惯性力系简化的主矢Rg'与简化中心位置有关","惯性力系简化的主矩Mog与简化中心位置有关","惯性力系简化的主矢Rg'与简化中心位置无关","惯性力系简化的主矩Mog与简化中心位置无关","【多选题】质点系的惯性力系向一点简化,一般得一主矢Rg'和一主矩Mog.以下几种说法中,哪些是正确的?( )",{"answer":101,"createTime":5,"id":102,"options":103,"question":110,"source":31,"type":90},[],124167817,[104,105,106,107,108,109],"在A、C两瞬时小球的动量相等","在A、C两瞬时小球的动量不相等","在A、C两瞬时小球的动能相等","在A、C两瞬时小球的动能不相等","在A、C两瞬时小球的动量矩相等","在A、C两瞬时小球的动量矩不相等","【多选题】图示小球质量为m,沿半径为R的光滑半圆弧面,以铅直向下的初速度v0,从点A沿圆弧面ABC运动到点C.以下的几种说法中,哪些是正确的?( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F981c574848155cc413dd3807f3704636.png\">"]