题目内容


如图所示,r虽大于两球的半径,但两球的半径不能忽略,而球的质量分布均匀,大小分别为m1与m2,则两球间万有引力的大小为(                                                           )                                                   

                                                                                                

    A.              B.

    C.   D.    

                                                                                                                                   

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