题库网 (tiku.one)

 找回密码
 立即注册

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp,上传完成后会在上方生成预览,用鼠标连续双击缩略图,或拖动缩略图,该图片就被绑定至本题,显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片,绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别


习题练习:Rotational Equilibrium



 作者: admin发布日期: 2024-07-30 16:51   总分: 10分  得分: _____________

答题人: 匿名未登录  开始时间: 24年07月30日 16:19  切换到: 整卷模式

标记此题
1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.41: For the diagram shown, what is the magnitude of y( --6klg o./u-dk1yjvu:5vlzp dj elthe torque from the applied force as measur dkvojuk-g:5u--ey(6pl1vlj ydlz/ .ed from the center of the disk?




参考答案:    

标记此题
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.38: A uniform meter stick of mass 0.20 kg is pivoted at the 40-cm mark. Wtelb)r 0-2 mzfhere should one hang tmr-)f20 lbeza mass of 0.50 kg to balance the stick?

参考答案:    

标记此题
3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.37: A uniform meter stick has a 45.0 g mass placed at the cm 20 makuo*qnu 9;gg(rk as shown in the figure. If a pivot is placed at the 42.5cm mark and the meter stick re;9og nu(*uqgk mains horizontal in static equilibrium, what is the mass of the meter stick?


参考答案:    

标记此题
4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.16: Amass M1=40 kg is at the very edynvt crq9s;1gyc 2o,,ge of a 6.0m long plank which is pivoted about its center of mass located directly at the center yc1cq t ,v,2g9yno sr;of its length. How far from the center of the plank (x) should the mass kg M2=80 kg be placed so that the plank remains in static equilibrium in a horizontal position?



参考答案:    

标记此题
5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.20: A uniform 10.0 m long plank is pivoted about its center of gravity. A qj+ a+l-knjo-mass M1 then is placed at the left edge of the plank and a second mass M2 is placed 1.0 m from the right end. To+j+ lanq-j k-his system is in static equilibrium (shown). If each mass now is moved 2.0 m closer to the center of the plank, which one of the following choices best describes the subsequent motion of the plank?



参考答案:    

标记此题
6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.34: A mass m attached to a light string of length L is lo/5zge3:fa *m cjlot(scated at an angle θ below the horizontal as shown in the figure to the right. The mass then is released from rest. Calculated from an axis perp:emja (glft *cos z53/endicular to the plane of the page through the pivot, which one of the following choices represents the magnitude of the torque produced by the gravitational force acting on the mass at this instant?



参考答案:    

标记此题
7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.33: A uniform rectangular solidbklwz f 8(qynst)r5q20 1d tt: of side length Land width w sits on a frictionless incline of variable angle θ . kbr8f(t0 2dz:qy )s t q5tnwl1Assume that there is a very tiny peg preventing the box from sliding down the incline at the point labeled P. At what angle of incline will the box begin to tip over?




参考答案:    

标记此题
8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.49: An inverted “V” w ) ji76wit1 p9otj gdfm*ky.:in static equilibrium is made from two uniform beams each of mass M=12 kg. Each beam of the “V.wd ywjf69i)gp1 ik7to:*m j t” has the same length and makes an angle of $30^{\circ}$ with the vertical as shown in the diagram. Which one of the following choices best represents the magnitude of the static friction force acting on the left leg of the “V” from the level ground? The coefficient of static friction between each beam and the ground is $μ_s =0.76$.




参考答案:    

标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.42: A long uniform rod, pivoted at one end affixed to the ground, is z4gf7;j*:f oeus m*qd in static equilibrium A horizontal rope acts 75% of the way up the rod while a vertical rope acts at oq:;ej fdm*4sgu7f *zthe 0far end. The magnitude of each rope’s force is the same as the gravitational force acting on the rod. What is the value of the angle θ in the figure?


参考答案:    

标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.43: A uniform beam connected to a wall at the hinge is in statw1dmq 1ur.lbg 86w23d )vimg+ 4davefic equilibrium as shown. The cable connected to the beam is masslesfe2d .riw1mldq 4 1v 6 ugb)mw8va+g3ds. What are the directions of the horizontal and vertical components of force acting at the pivot on the beam?



参考答案:    

  • :
  • 总分:10分 及格:6分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题,此次习题练习共有 10 道题
    本系统支持习题练习,作业与考试三大模式,作业考试自动评分,成绩排序一键导出,可设定动态变量同一试卷千人千题
    如果您对本系统感兴趣,想加入我们或者想进行任何形式的合作,请加微信 skysky1258

    浏览记录|使用帮助|手机版|切到手机版|题库网 (https://tiku.one)

    GMT+8, 2024-11-22 04:55 , Processed in 0.115693 second(s), 41 queries , Redis On.