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: 游客未登录  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 magnitui:;td2 o s;9xz okk3t5nzir k6de of the torque from the applied force as measured from the center of the disdt 6t:i o9kozknk3izx ;5;2sr k?




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 0.2qdu x;uen9;of,9hz /0ebp;f v0 kg is pivoted at the 40-cm mark. Where should one hang a mass of 0o0ef x;/fq;n9vzb9de ;u,puh.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 plu o. 6nip)ep7aaced at the cm 20 mark as shown in the figure. If a pivot is placed at the 42.5cm mark and the mete)neu.pi67p aor stick remains 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 edge of a 6.0m long*9lj y:u cphjkxx+;yyp:8oc; plank which is pivoted about its center of mass located directly at the center of its length. How far from the center of the plank (x) should the masl:*c x yocp+uky;xj h9;8y:pjs 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 (a:r xyl*.xzl.0xmi b about its center of gravity. A mass M1 then is placed at the left edge of the plank and a s0 r(i bl.a*mx: l.yxzxecond mass M2 is placed 1.0 m from the right end. This 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 attachx 1nk3k eg k;y(,vrp0ked to a light string of length L is located 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 perpendicular 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 3k (r0 enkk pg1k,v;yxforce 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 recur7op u.ay* b;w4c pb:tangular solid of side length Land width w sits on a frictionless incline of variable angle θ . Assume that there is a very cawybob7u;r 4.u*p :p 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” in static equilibrium is made from tsr 3umwl+2n8ge wd ;1dwo uniform beams each of mass M=12 k gw mn1 l8u+2sw;erdd3g. Each beam of the “V” 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 on pq-:m n(vbgqzymso9*(u+r p1e end affixed to the ground, is in static equilibrium A horizontal rope acts 75% of the way up the rod while a vertical rope acts at the 0far end. The magnitude of each rope’s force is the 9(:y*q u pns z-vq( +g1mbmporsame 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 co++ nb-fsf-gxn2 h h83ije8mzynnected to a wall at the hinge is in static equilibrium as shown. The cable connected to the beam is massless. What are the directions of the horizontal andjn m-xi8 2n-+ sbhf3y zh8fge+ 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
本平台(https://tiku.one/)支持练习,作业与考试(自动评分)三种模式,群组成绩统计排序导出,题目动态变量实现同卷千人千题
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|手机版首页|使用帮助|题库网 (https://tiku.one)

GMT+8, 2025-11-6 00:06 , Processed in 0.106812 second(s), 41 queries , Redis On.