Mechanical Advantage - 无忧得胜-网上国际课程 (5edu.win)

?作业考试练习?美国物理杯赛(Physics Bowl)?Mechanical Advantage

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习题练习：Mechanical Advantage

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

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

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99.10: A simple machine can N,vn2w(4bh qr jOT do which of the following:

A. have a mechanical advantage greater than 1.

B. change the direction of the force.

C. move the resistance a greater distance than the applied force.

D. increase the energy put into it.

E. produce a force on the resistance which is greater than the applied force.

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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 4 vfm;05zgfrhm 5/vxf pulley system shown to the righ45 fv/v f;mgzm0xhf5r t?

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

09.39: For the compound machine comprised of the inclined plane r4i)(/pg fvdjoko 4tjgus :6(and pulley shown, a 75N force is required to slide a box with mass M=10 kg up the incline at a constant speed. What is /sg4dktfgi (4(oj )jrv puo:6the efficiency of this compound machine?

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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 150 N applied parallel to the in3/px6xtx jfh9b1r.vi cline’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 advantage (AMA) for this scenar9hxiv3r16 x.t/j xpfb io?

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

16.13: For the inclined pla;k f:lyhp9r3.( aejg a9oz gof0zk24gne shown, which one of the following choices best represents the value of the incline’s ideal mechanical advaj40agekpo .l9f:za3go2f( ; rg9zk hyntage?

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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 m th / q5xpodlqygy9.-i).-bbxoves along the x- axis with a velocity of +4.0 m/s. A net horizontal force acting along the x-axis is p9q lbbxih/d-y.q. xyg5 )-ot 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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06.17: A point-like object of mass 2.0 kg moves along the +x- axis with a kf/mbxk5p4;l r i / pjiytn-z/4inetic 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 delivered by the 5 /m r-jxz;lip 44k/iny/pbf tforce (units in kg m/s).

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

15.27: On a frictionlumxz0m;mogum c7sj8av,u (j3h6-u 5qfi.b7eess horizontal surface, two bodies 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 rest. A graph of the force exerted onto Body 2 from Body 1 during tujh7m cbmqv uax j 8ouuiz5ge30sm f,.(;6-m7he collision is shown.
What is the mass of Body 2?

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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-on;gp:2 ,dajno*jl8 doa 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,*a ;gp ond j8o:dal2j 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?