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 84ykgz-9xzk l,f 4jxbthe displacement versus time graph shown to the right. Which of the fy,x4 8zjk 4gblkf9xz-ollowing 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 of a spring and undergoes simple qdf)cgw:49jsdree*p -qcja;b z0p16 harmonic oscillation. The graph provided shows the position of the mass as measured from the floo j:dbe z4q ;01 r9js gpqwcc)-f*epd6ar 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 simppph kn1t 37or6le harmonic oscillation. The graph provided sh7t16h3pnr p koows 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 dcgwj tu1 -:n6connected to the 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 d:nuw 6 c1g-jtt + 0.50) where all quantities are in base SI units. Which one of the following choices gives 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) = Acos(wai mhe6ej)+7 jt) . What is the average speed for one full oscillation in terms of the mass’s maximum speed dur+eajhi 6j em7)ing 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 undergoes Simp .d:jj0-ml oomle Harmonic 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 seconds. What is the amplitude of the vibrating mass.0m m-ldo o:jj 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 undergoes Simple Harmonic Motion. Its motion+zj)d9s8epn6p tzma(2c j4c(* k mkl n can be described by thefollowing equation y = (0.3 m) sin (10π t + 4) where m is in meters and t is in seconds. What is t4jm p8lnp9)ae( 2tz zs6knckc(j*d +mhe 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 and rejk xs vcrt952j6kqn7)leased. It swings freely to the opposite side and stops. Which52 sjj)k r67vtnkq 9cx 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 object moving aieq7 ,-xzyi1q hk-:;ar . d i+mtfxu)xlong a straight line is given by the velocity vs. time graph 1rm.z )-;u7 tiy-i,ai:hxqdq ef x+xkshown.
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 line is given by the vel utu.3o .s(i x5, wz(boq ewfb,qy6)bbocity vs. time graph showo.e.6zs3qoy ) wwfu(btb,u(,qbb xi5 n.
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 t8hd ooscsu4 ,n: 7o6xaccording to the graph of position as a function of time show7 6to8ndos o:c,h4suxn below.
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; attaches(cda337xuea d to a horizontal massless spring with spring constant k; is set into simp 33casd7ua xe(le harmonic motion. Its maximum 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 nroy+0*xa*r yz.q ,ibrest on a 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. Thi,*q0rryyaz b*+. o nxe 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 spring with a spring constant k. If the m 2ti68j -u/x uvkabug(taa +w1ass is set into simple harmonic motion bjuibt(aka8a u62-wxu + tg1v/ y a displacement d from its equilibrium position, what would be the speed,v, of the mass when it returns to equilibrium position?

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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-.80(d hed *anutkpo; 4agvqo a horizontal 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 would prevent the block from reqh eua(n- 4 d8dkt .o;g0op*avturning to equilibrium with non-zero speed?

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