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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 do which o-v* : iqiawo ;2yas6j6pe(gpuf 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 me-r 9u/x key dpap1a65qchanical advantage for the pulley system shown to the right?9a dqrp -ekupx15/ y6a

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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 machikkrsh q k++dx90+kh9g8 tdvx/5*ikg hne comprised of the inclined plane and pulley shown, a 75N force is required to slide a box with mass M=18k + 95xs+g*rvh h9ikkgh+qkk/t0d xd0 kg up the incline 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 3mhqn.;c fb /y150 N applied parallel to the incline’s surface is needed to pull the object of mass M=10 kg along the entire length of the incline’s surface at a constant speed. What is the actual mechanical a. 3cqf /bn;ymhdvantage (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 plane shown, which one of the fzvn a;ocu2uo55v cs *)ollowing choices best represents the val2sav uu c5z;vcon*5o)ue of the incline’s ideal mechanical 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 objecl *cnc 90zdrxmss0 -rc9zd: /it of mass 2.0 kg moves along the x- axis with a velocity of +4.0 m/s. A net horizontal force 90 dcs:c-xmzrd* z/lcr9ni0 sacting 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 object of mass 2.0siy 9,/j ep(oa kg moves along the +x- axis with a kinetic energy of 16.0 J. A net horizontal force ac 9sei(oa ,/jpyting along the x-axis is applied to the object with the force- position profile shown. What is the total impulse delivered 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 horizontal surface, two ni.(jpvd b5)dc: k: 3cp4 qawhlw8 v4zbodies make ahead-on collision and stick togethpw:a( qvl4dvc 3kijbw p5.4h)d:czn8 er. 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.
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 horizontal surface, two bodies make ahead-onjho. 6tc fgb(9 collision 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 stoh(bg9 fj 6.chown.
How much kinetic energy was transformed to other kinds of energy from the collision?


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