Parameters and Typical Relationship - 无忧得胜-网上国际课程 (5edu.win)

1#

05.12: A mass on the ez6r:s;+,c7jd cf c hvlnd of a spring oscillates with the displacement versus time gldc 7 scc;,+6hr jzvf:raph shown to the right. Which of the following statements about its motion is INCORRECT?

A. The amplitude of the oscillations is 0.08 meters.

B. The frequency of oscillations is 0.5 Hz.

C. The mass achieves a maximum in speed at t = 1.0 second.

D. The period of oscillations is 2.0 seconds.

E. The mass experiences a maximum in the size of the acceleration at t = 1.5 s.

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

10.08: A mass is connected to the end ofb0ph2spn4 5 8m h7o tazhd+bjrb e2j4+ a spring and undergoes simple harmonic oscillation. The graph provided shows the positiob7rs2hppoja+zm20 h84nbdet4bj h 5+ n of the mass as measured from the floor as a function of time.
What is the period of the mass’s oscillation (in units of seconds)?

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

10.09: A mass is connected to the end of a spring and undergoes simple hkm0me+a+az1 xarmonic oscillation. Th+mka+ea0 z1xm e graph provided shows the position of the mass as measured from the floor as a function of time.
What is the amplitude of the mass’s oscillation (in units of meters)?

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

14.08: A 2.50 g mass connected to thef p11-syl(p sv end of an ideal spring oscillates in simple harmonic motion. The mass’s position is described as a function of time by x(t) =0.20 cos(8.00 t + 0.50) where all quantities are in base SI units. Which one of the following choices glv1fyspps (1 -ives the numerical value of the oscillation’s amplitude in base SI units?

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

15.26: The position of a mass connected to a spring obeys x(t; .6. to w0/psz,x1xcml mfpej) = Acos(wt) . What is the average speed for one full oscillation in terms of the mass’s maximum speed during oscfp/zcem1p.lot0s; j x6,.x w millation, $V_max$?

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

03.37: An object on a spring undergoes Simple Harmoniwl/w 4oli fes*+yc5 u2x bm8v5c Motion. Its motion can be described by thefollowing equation y = (0.3 m) sin (10π t + 4) where m is in meters and t is in secow vl/xw*e8s 5fm25uoyl4b+ic nds. What is the amplitude of the vibrating mass on the spring?

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7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

03.38: An object on a spring undb)l/7v4h qoxyu+wytj 1 tul9 ,ergoes Simple Harmonic Motion. Its motion can be desc wlvo)4y,y7bhj9x+ lut/qu1tribed by thefollowing equation y = (0.3 m) sin (10π t + 4) where m is in meters and t is in seconds. What is the period of vibration of the mass on the spring?

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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

00.08: A pendulum is pulled to one side ans)rqd3 6yg6 e4ny8 ffe1ojo tn zr-j.3d released. It swings freely to the opposite side and st 13 fy8nyt6ozo.dn-e4 3fgres)j j qr6ops. Which of the following might best represent graphs of kinetic energy $E_k$, potential energy $E_p$ and total energy $E_T$?

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9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

11.18: The motion of an objectii.w ws 5e*ds: moving along a straight line is given by the velocity vs. time graph.iwei sw5*s:d shown.
Which one of the following choices best represents the average acceleration of the object during the time interval from t=4.0 sto t=9.0 s?

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10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

11.19: The motion of an object moving along a straighl;gxt t2 k(;czheq n2;t line is given by the velocity vs. time graph;2tkn;c2h( lxg; zqet shown.
Which one of the following choices best represents the instantaneous acceleration of the object at the time of t=5.0s?

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11#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

12.17: A mass moves according to the graph of posipw0wu9pbw/ a ayvg 07)tion as a function of time shown bw)0/yuap7w gw 0bapv 9elow.
Which one of the following choices correctly represents the time instants or time interval for which the instantaneous velocity of the mass is considered always to be negative? Lettrepresent time.

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12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

94.05: Amass m; attached to a horizontal massless spring with spring 3:qg4yhkje4 vconstant k; is set into simple harmonic motion. Its maximum displacement from its equilibrium position is :veq43g yjh4k A. What is the mass’s speed as it passes through its equilibrium position?

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13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

94.40: A block of mass M is initially at rest on a frictionless floor, as s)r6 xrugt t,3hhown in the accompanying figure. The block, attached to a massless spring w6) 3,rxutt grhith spring constant k, is initially at its equilibrium position. An arrow with mass m and velocity v is shot into the block. The arrow sticks in the block. What is the maximum compression of the spring?

A. $x= v\frac{\sqrt{m}}{k}$

B. $x= v\frac{\sqrt{k}}{m}$

C. $x= v\frac{\sqrt{M+m}}{k}$

D. $x= \frac{(M+m)v}{\sqrt{mk}}$

E. $x= \frac{mv}{\sqrt{(M+m)k}}$

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14#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

01.36: A mass m is attached to a w77nn:) 9 o7ycaadtha spring with a spring constant k. If the mass is set into simple harmonic motion by a displacement d from its equilibrium position, what would be the speed,v, of the mass when it returns to equilibrium po79d nat)coaa7yhw n:7sition?

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15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

08.48: A block of mass M on a horizo 0l*b)e 5vhaeoi(d:q hntal surface is connected to the end of a massless spring of spring constant k. The block is pulled a distance x from equilibrium and when released from rest, the block moves toward equilibrium. What minimum coefficient of kinetic friction between the surface and the block wou5ebo qha ei )*0d(hl:vld prevent the block from returning to equilibrium with non-zero speed?

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