[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fmmx4vVA1d4GGF9FsMLbUSSEJZlOJyeF6EhusxdOOVKk":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":14,"question":21,"related":22,"source":33,"type":98},[],"2023-12-30 04:43:11",124167817,[8,9,10,11,12,13],"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",{"count":15,"courseId":16,"courseImg":17,"courseName":18,"workId":19,"workName":20},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","【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\">",[23,35,44,53,62,71,80,89,99,108],{"answer":24,"createTime":25,"id":26,"options":27,"question":32,"source":33,"type":34},[],"2023-12-30 04:43:10",124167793,[28,29,30,31],"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":36,"createTime":25,"id":37,"options":38,"question":43,"source":33,"type":34},[],124167796,[39,40,41,42],"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":45,"createTime":5,"id":46,"options":47,"question":52,"source":33,"type":34},[],124167798,[48,49,50,51],"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":54,"createTime":5,"id":55,"options":56,"question":61,"source":33,"type":34},[],124167801,[57,58,59,60],"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":63,"createTime":5,"id":64,"options":65,"question":70,"source":33,"type":34},[],124167804,[66,67,68,69],"\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\">","【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\">",{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":33,"type":34},[],124167806,[75,76,77,78],"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":81,"createTime":5,"id":82,"options":83,"question":88,"source":33,"type":34},[],124167808,[84,85,86,87],"\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":90,"createTime":5,"id":91,"options":92,"question":97,"source":33,"type":98},[],124167810,[93,94,95,96],"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":100,"createTime":5,"id":101,"options":102,"question":107,"source":33,"type":98},[],124167813,[103,104,105,106],"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":109,"createTime":5,"id":6,"options":110,"question":21,"source":33,"type":98},[],[8,9,10,11,12,13]]