摘要： B 解:设火星和飞船的质量分别为M.m.火星表面的物体质量为m0 飞船绕火星做匀速圆周运动的周期T＝··························································· ① 火星对飞船的万有引力提供飞船做匀速圆周运动的向心力即 ＝m············································································· ② 火星表面的物体有: ＝m0g···································································· ③ 联立①②③得:g=·············································································

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