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习题练习:Mechanical Advantage



 作者: admin发布日期: 2024-08-13 15:22   总分: 9分  得分: _____________

答题人: 匿名未登录  开始时间: 24年08月07日 15:59  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.10: A simple machine can NOT do6l ffjr4:n/gv qq5i7dpr;a k: which of the following:


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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.13: What is the ideal mechanical advantage for the pulley system sk1j3tz ry(co iv92 6nphown to the righcvj2roi6z pt ny(391kt?

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.39: For the compound machin xee(tq7 x .:bayyi-q-e comprised of the inclined plane and pulley shown, a 75N force is required to slide a box with mass M=10 kg up the inclinabyyqx- e-7 (: te.ixqe at a constant speed. What is the efficiency of this compound machine?


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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.36: For the inclined plane shown, a force of 1508n4kzj-rijvo evuu *::2rw ( q N applied parallel to the incline’s surface is needed to pull the object of mass M=10 kg along the entire: r 4wuj *uj2no:qr-e zkiv(8v length of the incline’s surface at a constant speed. What is the actual mechanical advantage (AMA) for this scenario?


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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.13: For the inclined plan3bj7j d)od-qv e shown, which one of the following choices best represents the value of the incline’s ideal mechanicab)vj3q- 7dojd l advantage?


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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.45: A point-like object of mass 2.0 kg moves along un (l(f o u.wy tdfz+j4d:g2h+c *)wmtthe x- axis with a velocity of +4.0 m/s. A net horiz 2f z( n+w)y ouf+hwc:g *tlt4.djm(udontal force acting along the x-axis is applied to the object with the force-time profile shown. What is the total work that was done by the force?


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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.17: A point-like objec) aa: atwj5wo8t of mass 2.0 kg moves along the +x- axis with a kinetic energy of 16.0 J. A net horizontal force acting along the x-axis is applied to the object with the force- position profile shown. What is the total impulse delivered85a)w a :tajow by the force (units in kg m/s).



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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.27: On a frictionless horilut3m-6r- dt6 k+b 7ee flwylw4j mx)8zontal surface, two bodies make ahead-on collision and stick together. Body 1 has a mass of 3.5 kg and initially moves to lm6ejr)- ldfxt43 m lkwe+ ub 7wt6-8ythe right with speed 7.0 m/s. Body 2 initially is at rest. A graph of the force exerted onto Body 2 from Body 1 during the collision is shown.
What is the mass of Body 2?


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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.28: On a frictionless hof,mq4s:ufd zg33vo (wrizontal surface, two bodies make ahead-on collision(3,zsodvf4q wfgum: 3 and stick together. Body 1 has a mass of 3.5 kg and initially moves to the right with speed 7.0 m/s. Body 2 initially is at rest. A graph of the force exerted onto Body 2 from Body 1 during the collision is shown.
How much kinetic energy was transformed to other kinds of energy from the collision?


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