Rotational basic parameter - 题库网 (tiku.one)

1#

05.11: A wheel of radius 0.1 m (wheel A) is attached b zgq4nf8t2j a79 1f kbqsgh(+z8dop,v y 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, wh1+q2v(94f dz, 8ak f7ogn b8hqzpjgts eel A will rotate through

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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 6p2tgpd7/ uc :mee1lfsn26 xea snapshot of three cars all moving counterclockwise during a one le nfs:2mte 7cp16ldg/xpu6 2 eap 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 q yktg 1qmq- yf vnr,j 54:am.i9:x)mhall moving counterclockwise during a one lap race on an elliptical track14mh:qmngt.-q)r5 :xi mayq k,9y jfv.
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 cars a;(o3q5 nd)t:ulgz+2n/xkfv g pkx 2 )9bzvpbqll moving counterclockwise during a one)2b/53vx2 lkg utpf;ov ()pq9:zznxqk dn + bg lap race on an 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 znhw + 8g //5j)rbhkvqao 0cs:the following choices best represents the average angular speed of the hour hand on a standard clock (in units of rad/s))rwjnhsb80h5 /vo/:z+ kgc aq?

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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 onkjwv709rk26, c hqwbd law.5te kilometer in circumference. The first car can w.at0dwqk2c5jb7h v9 lkrw6,circle the track in 15 seconds at top speed while the second car can 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 rota ,k6pbzdqp oz 6qzen sg,.0j(/tional kinematics equatizjz o,pges d6.z0(qnq/p6bk ,on $\Delta\theta=w_0t+\frac{2}{1}αt^{2}$

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 spinning at a co3 zu h g)q2axj41vpu4dnstant rate of 45 rev/min. What u4qg)ph1jv 24xu3da zis the average 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 2.vrz; y*61 eswl50 s. What w sle*wz1; vr6yas the initial angular 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 angcxkw44kklv)5i;c;m vp:cgax-p a c3 )ular speed of the secondhand on a clock (in rad/s)vxmx;4ippg aw kck )4 :cka;c-3c5l )v?

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