Rotational basic parameter - 无忧得胜-网上国际课程 (5edu.win)

1#

05.11: A wheel of radius 0.1 m (wheel A) iymd3z:k1 r7lfgkfs 05s attached by a non-stretching belt to a wheel of radius 0.2 m (wheel B). The belt does not slip. If wheel B turns through 1 revolution, wheel A will rotate throkl sdf 3m7rg :k0f51yzugh

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

03.01: The diagram below is a snapshot of three cars al8 xsl*amqz i3xt)6s9sv v-5bf l moving counterclockwise du -sa x8 mv6b5ft 3sqlvsxz)*9iring a one lap race on an elliptical track.
Which car has had the lowest average speed during the race so far?

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

03.02: The diagram below is a snapshot of three cars all moving counterclo : l,asa9k;4*ui( 1ft ex oxckr*t8kreduy:9nckwise during a one lap race onntau:kke;iy r9 kc,*te 4 a1x:dx89osfr *(lu an elliptical track.
Which car at the moment of the snapshot MUST have a net force acting on it?

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

03.03: The diagram below is a snapshot of three carm36i/xdw km+a0yx:x .cfywy8i* cxs.s all moving counterclockwise during a one lap race on an /xim sxywcdx :6 ak ymic.+yx3 *0f8w.elliptical track.
Which car can finish the race without changing its present momentum?

A. carA

B. car B

C. car C

D. none of the three cars can finish the race with its present momentum

E. cannot be determined with information provided

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

12.25: Which one of the following choicgh-rn a nhg4) c24h+be/c8yorwp ,4hdes best represents the average angular speed of the h4)hghgc bcr,e44n+ 2wyphn /h-r d8aoour hand on a standard clock (in units of rad/s)?

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本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

00.40: Suppose two cars are racing on a circular track one kilometer 2* u67svhlp ycin circumference. The first car can circle the track in 15 seconds at top speed while the second car can7 6ush2vpcl* y circle the track in 12 seconds at top speed. How much lead does the first car need starting the last lap of the race not to lose?

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7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

09.16: What condition must be met in order to use the rotat1 qfq(y:kz9w qp7q. gmional kineqpqwfzmg7(y:1 .q kq 9matics equation $\Delta\theta=w_0t+\frac{2}{1}αt^{2}$

A. The angular acceleration is constant.

B. The angular velocity is constant.

C. The linear acceleration is zero.

D. The angular acceleration is zero.

E. There is no restriction on the use of this equation.

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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

05.32: A turntable plays a record by spid m gyw-5-y2g va:e.panning at a constant rate of 45 rev/min. What is the averayvgm- :2-ya 5.egadpwge angular acceleration of the record to reach this final angular speed, having started from rest, if it takes 8 seconds to do so? All answers are in units of rad/s2.

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9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

17.18: A disk of radius 75.0 cm makes 3.5 revolutions when coming to rest in 2hvazeob70lu4 4 tv +y*c*,s dgu g017tpnkdf1.50 s. What was the initial angv, d *0saez1dt1+ f*u uyo4 pbc7h4 ngglv0t7kular speed of the disk?

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10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

08.12: What is the average angular speed of the secondhand on a clock (in ra;lqw js0i a):;a eudeoi38j0sd/s)?ai30w se; uajql08; d)i:eojs

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