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 in an orbiting spac(;snqj pd on(6w*p:ule craft attaches a masso ,) pk9owpj7x m to a 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 cir,9po wox k)jp7cular 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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