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 machine can NOT do which of the followingywkp3u2epa f6 z6+t;m+ ud0p75 fkagm:

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 quj/-.,jmd2y8 qmgcf advantage for the pulley system shown to the rimj2j /.8yuqc qm f,g-dght?

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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 machined7e ,jwv* 9bmo comprised of the inclined plane and pulley shown, a 75N force is required to slide a box with maswvod e*, 97mbjs M=10 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 150 N applied paralh/;h w -ah5 mg;:ciosnlel to the incline’s surface is needed to pull the object of mass M=10 kg along the entire length of the incline’s surfa/i ;-h:s cnhmao;g5h wce 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,znw3nv7h8jw5di 5j:o which one of the following choices best represents the value of the incline’s idvn57h :dj3 85w zwnojieal 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 obgo est9nh3u4md 2g k(g8oax* n-7bu z0ject of mass 2.0 kg moves along the x- axis with 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 shg 8*9 (sbmhnuz 43d x02 gg-aekouo7tnown. 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 along the + dq,tlgs; dh wm 1* kq4gsx34x:w37hiex- axis with a kinetic energy of 16.0 J. A net horizontal force acting along the x-axis is applied 7w1q34ql:x t 4ki, sgxd*dmgs 3h;h ewto 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 make ahead-on coll)5 / rf ygwpt*gs 6s avhnzn;/*i-etv2ision 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 exertzns) nr 52g*a/fiy swe/g; h p-vv*tt6ed onto Body 2 from Body 1 during the collision is shown.
What is the mass of Body 2?

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本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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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 sukc *8o 4l1smnmgb/(w urface, 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. Bodyu*w/okbm8 (4l sgm cn1 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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