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

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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 machin;hbu8l;c n tv0r,w0/agsaa9he can NOT 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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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 shown to th 2)wx,y5qgxh jvw7g /y-lq7ofe ri q yx)xfw7q5h,/w2j- yvg gl7oght?

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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 machine comprised of the inclinew ebfh x7(1u;;)ip-k .h ifwqjd plane and pulley shown, a 75N force is required to slide a box with mass M=10 kg up the in.ux q(i;);1j ke-p w7bwhhfficline at a constant speed. What is the efficiency of this compound machine?

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教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

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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;p-u s 8nybnm* of 150 N applied parallel to the incline’s surface is needed to pull the object of mass M=10 n* s8;m-pbynukg 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 plane shown,mx-yt,/9av g 7e/tk nff/l a1w which one of the following choices best represents the value of the incline’s wknlffa9e,7t a/v/m/gtxy1- 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 the x- axis w)xq:qi)tv.vj k p f. w-i;at4jith a velocity of +4.0 m/s. A net horizontal 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 forc)vtq ;.txj4apiqf. wj:)v k-i e?

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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 along nh ca8vg72.ie;7f 0h2ir3/7xwepca c r9winathe +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 totaivaii78;2a9 hcn pe/a xrw whcg0.c7fe 23n7rl 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 make ahead-on 5+1vw3pgyviolex (fq w-vk-5 collision and stick together. Body 1 has a mas(fqvo-- 1vw 5eil yw5+pk xgv3s 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 horizontak m0*hjzw ,aw04z3 aqqmd 0u)gatb0:i l 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 the col0tma*0z3w h 0q4 uk0qaagwbz,)d: imjlision is shown.
How much kinetic energy was transformed to other kinds of energy from the collision?

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