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

1#

05.12: A mass on the end of a spring oscillates with the displace*dhp q+lq :s0mw;* le7 lk+prfment versus time graph shown to the right. Whic+7hkl:s;lqfr *q0p*lmpdw e+h 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 c5n;uvte7t1 v jm4ql;q. ddt7to the end of a spring and undergoes simple harmonic oscilt jd;;m1qv d nucq5vt.t4l7e7lation. The graph provided shows the position 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 hdxax4qyaz3d p n8w),9armonic oscillation. The graph provided shows the position of the mass as measured from the floor as a function of time8a 3xqda)9yx4n wp d,z.
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 the end of an ideal spring oscillates in sim9no0 /q i.hzn urs4+o*uazqy) (hnzv5ple 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 gives the numerical value of the oscillation’s qrq sni.zo+v*hz)zu h0n49oua/ ny(5amplitude 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 sprhes6fw8x894bipw 8)p2xqiw b ing obeys x(t) = Acos(wt) . What is thee6wx)98xhsw4 wb2ip8b8p f iq average speed for one full oscillation in terms of the mass’s maximum speed during oscillation, $V_max$?

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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 urz 0o,hm)28iocx- *x2 zvktop ndergoes Simple Harmonic Motion. Its motion can be descrpt zk xo2x*ih-z2 c0v8oo)m,r ibed by thefollowing equation y = (0.3 m) sin (10π t + 4) where m is in meters and t is in seconds. 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 s/gg/ugel6;.69: jayf jie+hlx gl / jundergoes Simple Harmonic Motion. Its motion can be described by thefollowing equation y = (0.3 m) sin (10 xjglley+6/f9g:.g6sl egh; au/ijj/π 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 isa:y wuo2-sf6 wi(::4rjr: j8kmyb fur pulled to one side and released. It swings freely to the opposite side and stops. Which of the following might best represent graphs of kinetic ener:rf r:us46b j2y 8woyi : af:wukmjr(-gy $E_k$, 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 objef8w*dx ,n5f my l s,joc3fthx,w4 87sgct moving along a straight line is given by the velocity vssw8* ,msn xfl8,cdtfj4fw7 ,xyg5o3h . time graph 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 straight le 3ew(pd anm)w;fsuoo; )+u: kine is given by the velocity vs. time graph showe d;w:snkfo(u;pma ou)w )3+en.
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 q6 +xw chsqz/4 c4o(wzto the graph of position as a function of time shown belowc+ ohxq c4/(z 46wwzsq.
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 toj*gn f w 3.s7k,db6y y-5gpkqe a horizontal massless spring with spring constant k; is set into simple harmonic motion. Its maximum*7d6b3-yn,kfqg jkse yg 5p.w displacement from its equilibrium position is 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 4zc8gqarp+ :vy3tkz) frictionless floor, as shown in the accompanying figure. The block, attached to a massless spring with 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 maximu :zzp cyv83qkt+)a4rgm 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 pp -dh m2-.oyxspring 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 posi.o phxdm2 --yption?

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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 horizontal surface is connected to the end lg eyq(e/9 t/aof a massless spring of spring constant (y9laeqg /t/e 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 would prevent the block from returning to equilibrium with non-zero speed?

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