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习题练习:Rotational basic parameter



 作者: admin发布日期: 2024-08-13 17:43   总分: 10分  得分: _____________

答题人: 匿名未登录  开始时间: 24年08月07日 16:00  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.11: A wheel of radius 0.1 m (wyeoe4m( kn oz d.p6*0nheel A) is attached by a non-stretching belt to a wheel of radius 0.2 m (wheel B). The belt does not slip. If wheel 4nyzok *enop.e dm 06(B turns through 1 revolution, wheel 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 a snapshot of three cars all moving counterclovypxx 9 v.l-mf p-be13ckwise during a oev1fy 3 v- lppm.bx-9xne 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 t n cc6k*v vfjl8/,h/cahree cars all moving counterclockwise during a one lap race o/ cccnv f j,*h/avk68ln 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 cars all moving c p5rwcewl,f :i; 4ts w.j.itp.ounterclockwise during a one lap ractlpi;wt s5 pw.jc r.i.w:e 4,fe on an elliptical track.
Which car can finish the race without changing its present momentum?


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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 foll1esrjkqw, 3lkdh.q13.he fj3owing choices best represents the average angular speed of the hour hand on a standard clorlkkedh 1.e qh3w f31sjq,.3jck (in units of rad/s)?

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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 asf5dbm.k0b 4 f/j 4zstrack one kilometer in circumference. Th/d4s z mskjbab4.ff5 0e first car can 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 6e*d i17rpf0r bu)ovb rotational kinematics e*7rv1e)b bp o60fdur iquation $\Delta\theta=w_0t+\frac{2}{1}αt^{2}$

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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 con qr;k 8 iak n8y1od:n23:fvmyqstant rate of 45 rev/min. What is 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 o8: qk;8d:vr1fqiyk naym n3 2of 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 cominffj.tz dfh99hi) ji6d6u kl44g to rest in 2.50 s. What was the initial angularfk9ht.lzf 446d9hij ) fuijd6 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 rad/s)dom ld)fpy t2 rb.g79(?fr( my d)d9lgto2p 7.b

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