本题目来源于试卷: .Gravity..，类别为 美国物理杯赛(Physics Bowl)
[单选题]
17.48: In the binary star d+wxt2 c*h)c r system nfj:o fmfm u.q;(i+w 1 shown, the two stars follow circular orbits about the system’s center of mass. The stars are separated by a distance D that is large compared to their size and are subject only to their mutual gravitational attrac +mu;nmf w f(:oij qf.1tion. The orbital period of the star of mass M is T. Which one of the following choices represents the total mass of the binary star system?
A. $\frac{π^{2}D^{3}}{5GT^{2}}$
B. $\frac{4π^{2}D^{3}}{5GT^{2}}$
C. $\frac{4π^{2}D^{3}}{GT^{2}}$
D. $\frac{16π^{2}D^{3}}{5GT^{2}}$
E. $\frac{25π^{2}D^{3}}{4GT^{2}}$
参考答案: C
本题详细解析:
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