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 fox6 c(l0gh mf155pqaql llowing:

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 sh38c*4 l 5zhh jhjtq+ygown to the righg+h3cytq8j45h* l h zjt?

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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 czqdzv20e3+wyw e +1bpd 5( xwoomprised of the inclined plane and pulley shown, a 75N force is required to slide a box with mass M=10 kg up thd+(+pe e320vx ozbzw5wdw 1yq e incline at a constant speed. What is the efficiency of this compound machine?

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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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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

11.36: For the incli13jqwa-qo(r:x so or- ned plane shown, a force of 150 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 atoa -qjqxrs:o1-(rw3o 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 p;*ey5: nssx s ,ggig8u+(pyk clane shown, which one of the following choices best represents tgxs g(5p,cy*e:gk +s u;ysi 8nhe value 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 aqs3bbp5*z295dmefx 9 cz3pb v long the x- axis with a velocity of +4.0 m/s. A net horizontal force acting along the xbpfqs *53cx9e3v z5z9 2pbdbm-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 2.0 kg moves along the +x- axis ao.0 t a4d,i5 22 hwwfffpdpx+p ( em6b8j2fjhwith a kinetic energy of 16.0 J. A net horizontal force acting along the x-axis is applied to the object with the force- posixd 0bfh,ito22hp(e a2ajf+w dj 6fwm4f8. 5pp tion 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,ln2iafn p,2rs u7 ()ego klh/-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 thlspfk, ,inn/7) g rlo2h(a2ue e 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, twowim3 cj .bd2vocg5ig*rrr75: bodies make ahead-on collision and stick together. Body 1 has a mass of 3.5 kg aor vc.3br2:7igcm5 jrigd w *5nd 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.
How much kinetic energy was transformed to other kinds of energy from the collision?

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