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        本题目来源于试卷:  Physics Unit8: Rotational Motion ,类别为 通用国际物理 
[单选题]
A solid cylinder of mass 10 k7 ad;qkcm96lc g is pivoted about a frictif,eb jm w..jp, onless axis thought the center O.  A rope wrapped arounp.b,,jj.mfew d the outer radius $R_1$ = 1.0 m, exerts a force $F_1$ = 5.0 N to the right.  A second rope wrapped around another section of radius $R_2$ = 0.50 m exerts a force $F_2$ = 6.0 N downward. (figure below)  How many radians does the cylinder rotate through in the first 5.0 seconds, if it starts from rest?
  
A. $13 \; rad$ B. $7.5 \; rad$
 C. $5.0 \; rad$
 D. $10 \; rad$
 
 
 参考答案:  C
 
 
 本题详细解析:
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