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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 (wheel A) is j1 xhf 33t(bhxattached by a non-stretching belt to a w(x3xf3ht bjh1 heel of radius 0.2 m (wheel B). The belt does not slip. If wheel 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 countercloq4+f( fin:2 btwk z w-k00t sw,mxve(mckwisek0fbmk -2(: ,z wwwmit+(v04 tnsq exf during 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 belowha07q*y a(e /uzmgmaor+ /qh2 is a snapshot of three cars all moving counterclockwise during a one lap race on ana2o0 mhmgeyq(h /q* a/u rz+7a 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 snapsho(a pf2ywjjwtj86 : :bbt of three cars all moving counterclockwise during a one la:bja: y6w8j2bj t p(wfp race 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 fol)44ojdm*f n4l7x szbtlowing choices best represents the average angular speedz 7s xd4b*4 )tnlo4jmf of the hour hand on a standard clock (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 are8)plfx.l*+ wq sspwp,s s.kph 9:u)e k racing on a circular track one kilometer in circumference. The first car c8*9sk: q s)xf,.k)+hw plwesp l.pupsan 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 w ;9wqk9/clabd xe3;a rotational kinematics e;;c9qxabk9 da wle /w3quation $\Delta\theta=w_0t+\frac{2}{1}αt^{2}$

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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 constant ra4t n-sw5gb )hute 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 second4-u hwg)b tn5ss 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 resy*,oe ghuct0; t in 2.50 s. What was the initial angular speey *cogut0; ,ehd 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 z/;w q*psmblv: mn.l1(in rad/s)mmbvwl pnzls* 1:q ./;?

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