Originally posted by seafireson2 at 2006-5-8 10:24 PM:5 Y; E4 _: G3 U- }1 }& P9 ?0 ~
如果北極有個洞真穿南極, % a$ G) o' f) @( c$ b% A7 g8 ?
您跌入去,...

Originally posted by milk~~ at 2006-5-8 10:38 PM:' J4 P8 c: G+ t, m) N: U) V8 V' I
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simple harmonic motion

Originally posted by fung at 2006-5-8 11:22 PM:
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仲要with damping

Originally posted by gaye at 2006-5-8 11:35 PM:7 u& }0 c" K* X6 ~" ?* X/ g

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但假如我唔係 North Pole jump 落...

Originally posted by gaye at 2006-5-8 11:35 PM:
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但假如我唔係 North Pole jump 落...

Originally posted by spector.R at 2006-5-8 20:51:
# p% y+ G/ ]7 b! R% n! b忽然有個奇想...你地有冇諗過
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假設...

Originally posted by 機密 at 2006-5-9 12:10 AM:
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1 L1 T% D# `6 \+ r8 Y無乜可能，除了極熱之外，還要頂得住地心的高壓！ 未到對面你都變左屎餅啦！ 瓜！

Originally posted by gaye at 2006-5-8 11:35 PM:; \" c  H6 x  }+ X
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但假如我唔係 North Pole jump 落...

Originally posted by 機密 at 2006-5-9 12:10 AM:
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無乜可能，除了極熱之外，還要頂得住地心的高壓！ 未到對面你都變左屎餅啦！ 瓜！

Originally posted by seafireson2 at 2006-5-9 00:15:
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都話明"假設"ar!!!!!!假設唔一定要正確ga.............

Originally posted by fung at 2006-5-9 12:03 AM:
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; V$ p  y& A: R2 c, f7 t咁我諗要睇你點define上同落
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Originally posted by spector.R at 2006-5-9 19:37:
1 |8 \: u) V# j$ F! j: I# A我諗要達成呢個創舉仲難過派人上火星....

Originally posted by 奇 at 2006-5-9 09:22 PM:
) F% ~4 i, ]4 H, ^4 z. w2 I$ @我反而想知"下降"速度幾多?

Originally posted by FishyR at 2006-5-9 05:09 PM:
8 s, ~/ z( b- B) ?: h% n  Q# u我結論係去唔到最中心, 而喺地心同地面之間停下來. 喺個點係無地心吸力, 因地面質量對我所做成o既萬有引力, 同地心質量對我所做成o既萬有引力喺對等.