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 space craft attachervw43ev dn y,+s a mass m 6h,k5v*hj/( tnxsheivlq- l8 to a string and whirls it around in uniform circular ms*qv6, vn th/e5h klixh8j (-lotion. 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 circular 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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