Fields D.1 Gravitational Fields & Potential (id: 487e4a2ed)

本题目来源于试卷: Fields D.1 Gravitational Fields & Potential ，类别为 IB物理学

[单选题]
Two stars of equal mjqqf/r7 d 8uqq/8rn(j8r+ ou.shf cy;ass $M$ are shown in the diagram, distance $d$ apart. A planet is equidistant from the two stars, with distance $\frac{d}{s}$ across the midpoint of the line joining the stars as shown.


What is the resultant gravitational field strength at the position of the planet due to the two star

A. $2\frac{GM}{d^2}\cos {45}^{\circ }C$
B. $4\frac{GM}{d^2}\cos {45}^{\circ }C$
C. $2\frac{GM}{d^2}\tan {45}^{\circ }C$
D. $4\frac{GM}{d^2}\tan {45}^{\circ }C$


参考答案:  B


本题详细解析:

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