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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 of s :ms 45ah56khkcjg; bthe 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 mech t5)r3 9l+v6qacnz+hgb5b ykianical advantage for the pulley system shown to the right?h+b 5bnq9vya 5 k+ 6trc3li)zg

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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 compounqs))v07v ov3j7 *asxn5c u qfad machine comprised of the inclined plane and pulley shown, a 75N force is required to slide a box with mass M=q5 q*0va aj7s)sv7c3 fx)vonu10 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 150vl;l,rcm2rs8 N applied parallel to the incline’s surface is needed 8;vl s,r c2mrlto 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 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 plabxefsg0u;*; a l9 dac p:1ty(yne shown, which one of the following choices best represents the vaa;tps (ua :l*01 g;ceyfxby9dlue 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 object of mass 2.0 kg moves along thyycnyz10 wri) ei, :u;e x- axis with a velocity of +4.0 m/s. A net horizontal force acting along the x-axis is applied to the object wit, nz;uie:y c01ywriy) h 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 2.0 kg moves alo3 kmr0kts;i2rng the +x- axis with a kinetic energy of 16.0 J2 is0;mr3trkk. 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 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 bodies .4z 7**7oq g t7zplhczprnr1 lmake ahead-on collision and stick together. Body 1 has a mass of 3.5 kg and initially movt*lp 4lqrz p.z o7r7c g7h1*znes 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 be)+cp k tgqd ..3r9jzbodies make ahead-on 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 r bt3+rpce.)d .9kjzg qest. 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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