本题目来源于试卷: Circular Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
00.19: An astronaut bo1+l,2 nt7glpeibra s/w(fso3( 5s/ewhz*o in an orbiting space craft attaches a mass m to gnc 1jbg 6jkcjv;6boc y86-/na string and whirls it around in uniform circular motion. The radius of the circle is r, the speed of the mass is v, and the tension in the string is F. If the mass, radius, and speed were all to double the tension required to maintain uniform circulagg n;c6jcvjb j6nb /8 61cyo-kr motion would be
A. $F/2$
B. $F$
C. $2F$
D. $4F$
E. $8F$
参考答案: D
本题详细解析:
暂无
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