[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f54SxYpU8qPiAS-zSE5twUJz8de_6S-M3G0wg6z8q0TA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":59},[],"2023-05-15 20:56:47",10894915,[8,9,10,11],"实验前甲同学没有平衡摩擦力","甲同学在平衡摩擦力时,把长木板的末端抬得过高了","实验前乙同学没有平衡摩擦力","乙同学在平衡摩擦力时,把长木板的末端抬得过高了",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},5,"6e46f0dc5b639ea097bcfd6b9dd6cbe7","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fffd8452377c96c561822fe1732615d0b.jpg","2022-2023-2大学物理1A实验 18学时","45836d69b97646fa873288fd50043c89","气垫导轨牛二.xls","用如图甲所示的装置做"验证牛顿第二定律〞实验,甲同学根据实验数据画出的小车的加速度a和小车所受拉力F的图象为图中的直线Ⅰ,乙同学画出的a-F图象为以下图中的直线Ⅱ.直线Ⅰ、Ⅱ在纵轴或横轴上的截距较大,明显超出了误差范围,下面给出了关于形成这种情况原因的四种解释,其中可能正确的选项是 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F77b96384d3b69fd88d2bf8da597596da.png\">",[21,32,41,50,60],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],10894911,[25,26,27,28],"只调节单脚螺钉","先调节单脚螺钉再调节双脚螺钉","只调节双脚螺钉","先调节双脚螺钉再调节单脚螺钉","调节气垫导轨水平时发现在滑块运动方向上不水平,应该","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],10894912,[36,37,38,39],"通过同时改变小车的质量m及受到的拉力F的研究,能归纳出加速度、力、质量三者之间的关系","通过保持小车质量不变,只改变小车的拉力的研究,就可以归纳出加速度、力、质量三者之间的关系","通过保持小车受力不变,只改变小车质量的研究,就可以得出加速度、力、质量三者之间的关系","先不改变小车质量,研究加速度与力的关系;再不改变力,研究加速度与质量的关系,最后归纳出加速度、力、质量三者之间的关系","关于验证牛顿运动定律的实验,下列说法中符合实际情形的是",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],10894913,[45,46,47,48],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa13c64400df4fcf78a21ada43340d09a.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff1593fe050e706e95ac6fadeb095e6c5.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc3f3177cc503fa15751454a2ad1cadc0.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4677f1382bd20860382da507a515ffd7.png\">","在"探究加速度与力、质量的关系"的实验中,在研究加速度a与小车的质量M的关系时,由于没有注意始终满足M>>m的条件,结果得到的图象应是下图中的",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":59},[],10894914,[54,55,56,57],"平衡摩擦力时,小盘应用细线通过定滑轮系在小车上","实验中应始终保持小车和砝码的质量远远大于小盘和砝码的质量","实验中如果用纵坐标表示加速度,用横坐标表示小车和车内砝码的总质量,描出相应的点在一条直线上时,即可证明加速度与质量成反比","平衡摩擦力时,小车后面的纸带必须连好,因为运动过程中纸带也要受到阻力",""验证牛顿运动定律〞的实验中,以下说法正确的选项是",1,{"answer":61,"createTime":5,"id":6,"options":62,"question":19,"source":30,"type":59},[],[8,9,10,11]]