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 4)qi90h c ntgvraq0/f 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 shod; ur(z8z i8ozwn to the rizrio ;u8zd z(8ght?

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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 pulley d-ttgqwj+5 zy7t0u o6 shown, a 75N force is required to sli oq+t0jg5 7t6ty zwud-de 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, vvrnxw1vlsf--l 0qt bv (4o1qd6l0b7a 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 at a constant speed. What is the actual mechanical advantage (AMA) for this scenvbd7 1l- 6f (qv4xovvnsl0q -r1t wb0lario?

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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, which or-e fj)+;xdwrne of the following choices best represents the v df-x)re;rwj +alue 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 along thej, e+w4 guza2h. x kaaa+,ii)m x- axis with a velocity of +4.0 m/s. A net horizontal force acting along the x-axis is applied toj 2 gaaxi)ewua .,zhm+4+i,ak 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 with- wef h9gw 8v2/j.fzqe 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 total impulse delivered by the force (units i9-qe/zfw .jfh2ge8w vn 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 ma8j ;cyer :hicbad2vo ..+e;u h3k0srtke 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 dur;hs;jyccaide..r r 3eh2 :v+bo u08t king 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, tuvz. )skf /m,dwo 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 exedzmuk) ./sfv,rted 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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