Mechanical Advantage - 题库网 (tiku.one)

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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 followisepj ol980 q+cy6lc* ji83jwing:

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 thhm1jiv8lk)8+utd*b w f47v 8 kkm 9msfe pulley system shown to the kis9mvk848*bf8hd + vkmwu17j t)l fmright?

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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 inclined plane and puld nuk2 /kuzz0m *r6kr6ley shown, ku r*0/kz62 mkzu6ndr a 75N force is required to slide a box with mass 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 15 -l fn*bu p7h8gwbq3h(0 N applied parallel to the incline’s surface is needed to pull the object of mass Mqg-3lwh( *h pn8f 7bub=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 plane /nnch7u74crgy mh- . a l1ow5jf/k ; 2k4ztmplshown, which one of the following choices best represents the value of the incline’s ideal mechanicac1k pm; oklw uct/4l.z7y2m74ha-hn grfj n/5l 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 along5m4 npzwnnq+usjm56m m8o- *t 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 s5nm p5o wt-zsnun 6 qmm*8+4jmhown. 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 mass5 bi hgoki +bs1u2/xwqzkt2(4 2.0 kg moves along the +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- positionk5t 4usxq +2z21(giibk bwh/o 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 bod so 5pry3c,cf9ies make ahead-on collision and stick together. Body 1 has a mas93c ypors,c5fs 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 horizontal surface, two bodies makgflq,w suyg+8,x+ ;tyqdm 8 a1e 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 2m+w,8tqyqa ,8sd+x1lg;ug f y 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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