[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fH8WmZhAB6PA2lN_I6afOxmeza-UNZzI6kXh6QTOqoQo":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-05-29 20:37:01",35418885,[8,9,10,11],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F047879abe62bf0b23eaea0796e12f930.webp\">(加在A点)","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F60194bdf4bf2d5ce53a601690b537a4e.webp\">(加在A点)","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F60194bdf4bf2d5ce53a601690b537a4e.webp\">(加在C点)","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F047879abe62bf0b23eaea0796e12f930.webp\">(加在C点)",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},16,"0359e6aaebe8c1e21e6ef689cf7d71ed","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F48eba3395437dd881b1b9275a0ad1028.png","理论力学","6bb6ff940cb149e6bbd75d11a89a33d8","动静法","图示重为P的小车在力F作用下沿平直轨道作加速直线运动,力F作用于A点,小车的加速度为a,C为小车的质心.则用动静法分析时对小车添加的惯性力\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F33881ecdd691dd56078702f0ca0f1e1b.webp\">\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F20a749b84ad3228509498f87c480f8fb.png\">",[21,32,35,44,53,62,71,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],35418884,[25,26,27,28],"F1=Fi=Fn","F1>Fi>Fn","F1<Fi<Fn","F1<Fi>Fn","列车在启动过程中,设其第一节车厢的挂钩受力大小为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd10e45cc3a691218e1b483e1b2894753.webp\">;中间任一节车厢的挂钩受力大小为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F00dc9699050a2b10b130b1f12ab21df4.webp\">;最后一节车厢的挂钩的受力大小为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffe6a94e09861ca5c8c93d9d5c19f1fe6.webp\">,则","v1",0,{"answer":33,"createTime":5,"id":6,"options":34,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":36,"createTime":5,"id":37,"options":38,"question":43,"source":30,"type":31},[],35418886,[39,40,41,42],"Rg=mLe\u002F2(¬,作用于A点) Mg=0(顺时针向)","Rg=mLe\u002F2(¬,加在质心C) Mg=mL2e\u002F3(顺时针向)","Rg=mLe\u002F2(¬,加在A点) Mg=mL2e\u002F12(顺时针向)","Rg=mLe\u002F2(¬,加在质心C) Mg=mL2e\u002F12(顺时针向)","图示均质细杆AB长为L,质量为m,绕A轴作定轴转动.设AB杆在图示铅直位置的角速度w=0,角加速度为e.此时,AB杆惯性力系简化的结果是\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F58df6326ff8f60ccc38f0c730ed92f50.png\">",{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":30,"type":31},[],35418887,[48,49,50,51],"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)","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\u002F1b23af09ef015c0b4c1c08799ec65b13.png\">",{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":30,"type":31},[],35418888,[57,58,59,60],"必有Sd=S0","不可能有Sd>S0","必有Sd>S0","可能有Sd<S0","图示均质矩形板ABCD重W,O1A和O2B两杆的长度相等,质量不计,O1O2=AB.设O1A杆转动到图示铅直位置时,其角速度w¹0,角加速度e=0,该杆所受的力的大小为Sd.当系统在图示位置处于静止时,杆所受力的大小为S0,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3de4a283344733e4d6097235fd15e3ec.png\">",{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":30,"type":31},[],35418889,[66,67,68,69],"凡是运动的物体都有惯性力","凡是作匀速运动的物体都没有惯性力","凡是有加速度的物体,其惯性力都与物体的运动方向相反","作匀速运动的物体,可能有惯性力存在","当物体可看成一质点时,以下说法中,哪一个是正确的",{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":30,"type":31},[],35418890,[75,76,77,78],"所有作用的外力主动力与各质点的惯性力组成一平衡力系,约束力可不必考虑","所有作用的主动力和约束力中的外力与各质点的惯性力组成一平衡力系","所有的主动力(包括内力)和约束力(不包括内力)组成一平衡力系","所有作用的约束力和各质点的惯性力组成一平衡力系","在质点系的达朗伯原理的结论中,以下说法中,哪一个是正确的",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],35418891,[84,85,86,87],"若M=0,必有T1=T2","若M>0,则P1作加速下降时,有可能T1=T2","若M<0,则P1作减速下降时,可能有T1>T2","当M=0时,必有T1>T","图示均质鼓轮重为P,轮上缠一绳索,绳的两端挂有重为P1和P2的重物,P1>P2,轮与绳之间无相对滑动,绳索的质量不计,轮上作用一力偶矩为M的力偶.若绳对P1重物的拉力为T1 ,绳对P2重物的拉力为T2 ,以下四种说法中,哪个是错误的?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F45ddc3b2bb2d3748ba658eab10dfdd39.png\">",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],35418892,[93,94,95,96],"绕定轴转动的刚体,只有当其质心在转轴上,其轴承上就没有附加的动反力,而达到动平衡","具有对称平面的物体绕定轴转动时,若转轴垂直于此对称平面,就可达到动平衡","绕定轴转动的刚体,要使其达到动平衡,只要其转轴通过刚体的质心就可以","绕定轴转动的刚体,要使其达到动平衡,不仅要其转轴通过刚体的质心,而且还要求转轴垂直于其质量对称平面","以下几种说法中,哪个是正确的",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":107},[],35418893,[102,103,104,105],"两物块、和滑轮上各质点的惯性力均等于零","两物块、和滑轮上各质点的惯性力均不等于零","滑轮两边绳的张力相等","滑轮两边绳的张力不相等","图示均质滑轮对通过其质心的转轴O的转动惯量为JO,绳两端物重WA=WB.已知滑轮转动的角速度w,绳重不计,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c46a0ea360cf86e67e0ffe1d493f21d.png\">",1]