如果我由北極轉穿個地下, 會唔會有一日到達南極?
忽然有個奇想...你地有冇諗過Z0@ WJ'g7U9l c
假設我有一部能夠抵受地球中心熔岩熱力6650°C的轉地機, 唔知我可唔可以坐住佢轉入地下轉到去南極呢?
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我諗其中一個難題係當我轉到去地球中心較下位置既時候可能會比地球既地心吸力吸反上去....除非加火箭推進器...
[color=Red]仲有一個假設係如果北極同南極係相通既(有條地底隧道)... 咁我由北極跳落去會發生咩事呢? 我諗就係當跌到落去地球中心我就會永遠停留係中心.... 唔上唔落...[/color]
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地心吸力真係好神奇....
[img]http://i9.photobucket.com/albums/a86/kimsuna/complex2/earth3.jpg[/img][img]http://i9.photobucket.com/albums/a86/kimsuna/complex2/earth1.jpg[/img] 當你由北極轉穿個地下...首先應該會係世界未日左先喎 >,< 唔會啦肯定 ~7w"NA,o2O
地心吸力係向內吸而唔係向下7S-ko%k$d$^/z |;Y
當你到達地球核心o個陣就會停左到....郁都郁唔到 如果北極有個洞真穿南極,
您跌入去,m {.oK'e Q
您會去到達南極~F1d ~5d `.Azd w v
但到達南極後會吸回北極~~~
到北極後又會吸回南極................b Y [~4P}i;~
即係好像彈簧0甘~~~8k"B&P zHf`?
(假設地球質量是平衡分佈)
(answer 來自我的預科物理ar sir)*K+\.i K H }.Am~
事實上,地球質量是唔平衡分佈, _eC ~&v P ~e
so 一次反彈的力量會比一次少, Hx l O9b
then 一次反彈的距離會比一次少4`Z| E I2e"x#x
最後您會停在地心......;K.`dt.U4|@:n/n5|1W
[[i] Last edited by seafireson2 on 2006-5-8 at 11:05 PM [/i]] [quote]Originally posted by [i]seafireson2[/i] at 2006-5-8 10:24 PM:
如果北極有個洞真穿南極, ,M:~g0M'ed(@:U9vp
您跌入去,... [/quote]
對~~!
simple harmonic motion [quote]Originally posted by [i]milk~~[/i] at 2006-5-8 10:38 PM:
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simple harmonic motion [/quote]
仲要with damping [quote]Originally posted by [i]fung[/i] at 2006-5-8 11:22 PM:
仲要with damping [/quote]8iA J O3@1re"v?
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但假如我唔係 North Pole jump 落去 , 係慢慢爬落去 , 咁到達地心時 , 再向 South Pole 出發個時, 係爬上去定爬落去 ? :confused::confused::confused:
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[[i] Last edited by gaye on 2006-5-8 at 11:36 PM [/i]] [quote]Originally posted by [i]gaye[/i] at 2006-5-8 11:35 PM: }7`b|1CQe7T)]
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但假如我唔係 North Pole jump 落... [/quote]
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咁我諗要睇你點define上同落
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即係話如果你設由north -> south為落i0n)q gU c"|E
由core去到south, 對north而言依然叫落I;M*C5p^
vice versa*qV I8y'KM e#} D Hp
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反而有樣野你要bear in mind ge係
由core出發, 要input energy [quote]Originally posted by [i]gaye[/i] at 2006-5-8 11:35 PM:
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但假如我唔係 North Pole jump 落... [/quote] \u:iP I:Z t
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爬上去定爬落去係相對...............
個方向係由您set......,oH!X%K7S8b5b.E fIAs
您定義north pole 係上面,0甘咪爬落law...
您定義south pole 係上面,0甘咪爬上law...a,\.B'd4`gm h X R
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however,點解唔simple d 呢........
由地心去south pole,
0甘咪ok law.......... [quote]Originally posted by [i]spector.R[/i] at 2006-5-8 20:51:
忽然有個奇想...你地有冇諗過2^ E5FR#K6p*N6_d;e
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假設... [/quote]
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！:D [quote]Originally posted by [i]機密[/i] at 2006-5-9 12:10 AM: } A hC?r R
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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！:D [/quote]
都話明"假設"ar!!!!!!假設唔一定要正確ga............. 類似問題某討論區見過,不過問題係掉個波落月心.... [quote]Originally posted by [i]gaye[/i] at 2006-5-8 11:35 PM:5KAdrW'{ x*a
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但假如我唔係 North Pole jump 落... [/quote]
爬的話...你怎也是向前吧!:D [quote]Originally posted by [i]機密[/i] at 2006-5-9 12:10 AM:]"T4D&B1F2h
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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！:D [/quote]F9| i |6I
高壓的確係一個大問題... 如果真係起到一條tunnel 避過熔岩, 滿心歡喜咁一躍而下, 開頭係幾high... 以百幾公里直衝10幾分鐘都冇事... 但最後唔係跌死 ,而係會爆肺慘死....WM H BD
成為歷史上第一個long 住係地心死亡既人....)Z Z\t6i-ok@5v N
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[[i] Last edited by spector.R on 2006-5-9 at 12:56 AM [/i]] [quote]Originally posted by [i]seafireson2[/i] at 2006-5-9 00:15:p w@ z'dlR6u
都話明"假設"ar!!!!!!假設唔一定要正確ga............. [/quote]V4F-eL2dN n
Ok Ok, :D:D:D 呢個問題, 我細時都有諗過. 當時我只假設有萬有引力. 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. 我個Volume唔變, 我會變得好熱.
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我攞呢d嘢去問physic亞sir, 答案係:"你比心機考好個會考啦, 呢d咁o既問題印象中喺196x年o既GCE A Level好似出過".
所以我都好想知道大家有d嘿嘢妙論 我諗要達成呢個創舉仲難過派人上火星.... [quote]Originally posted by [i]fung[/i] at 2006-5-9 12:03 AM:c4^ hZ WES Moy
咁我諗要睇你點define上同落0C:l(uE'H
... [/quote]
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沒錯 , 上同下係睇點 define , 冇 absolute , 但人在北極向地心出發(向下挖) , 人的感覺必定是向下前進吧 , 但人到了地心 , 再向南極出發的時候 , 人的感覺會是向上 or 向下前進 ? (假設個人冇掉轉到身) 我反而想知"下降"速度幾多?:hitwall: [quote]Originally posted by [i]spector.R[/i] at 2006-5-9 19:37: \Z1E \Ty5f6\
我諗要達成呢個創舉仲難過派人上火星.... [/quote]
幾本上無乜可能做到！:o
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