設有兩相距甚遠之恆星A與B，其平均密度比為ρA:ρB=1:2，質量比為MA:MB=4:1。如果兩恆星旁各有一質量同為m的小行星分別以圓軌道繞A與B運動，假設繞行的軌道半徑相同，則(a)此兩恆星表面之重力加速度比gA:gB為何?(b)兩行星之週期比TA:TB為何?(c)兩恆星系統之位能比UA:UB為何?(以無限遠為位能零點) (d)兩行星之動能比KA:KB為何? [90日大]
範例:行星運動與力學能[90日大]
rev="post-1142" 1 comment
– 2009 年 05 月 01 日
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Dear immortals, I need some wow gold inspiration to create.