請問公路車換刀輪適合嗎?? - 公路車
By Selena
at 2014-04-23T14:58
at 2014-04-23T14:58
Table of Contents
推 WuDhar :我那張圖也可以改成這樣 http://tinyurl.com/kumcby2 04/23 04:03
→ WuDhar :@c,我重輪轉動能也是起步灌進去的,能量哪裡沒守恆 04/23 12:54
→ WuDhar :輕輪只是把能量先拿去吃風換距離優勢而已 04/23 12:54
這真的就搞笑了
按你的圖,你解釋慣性小輪組在前段速度較快,所以耗掉較多風阻能
慣性大的輪組則是先存成轉動能
好~我同意
但是呢?
後半段停止踩踏到維持回原速度那段區間,慣性大的輪子降速少(速度反而高)
所以這時不是變成慣性大的輪組比慣性小的輪組消耗更大的風阻能?
重複幾次後,這一來一往間不就抵銷了,有啥優勢?
再對照你前面講法:距離夠遠就有優勢,真的嗎?
這樣停止踩踏的區間越多次,慣性大的輪組反而比慣性小的輪組消耗更多風阻能耶
既然要考慮不同速度下的風阻
那速度對時間的圖理應會變這樣 http://ppt.cc/M385
紅色是慣性小,藍色是慣性大,兩者都是從時間0到t之間等力(也就是做功相等)
積分一下,A跟B的面積相等,所以紅色跟藍色圍的面積一樣代表跑一樣遠
所以你說的滑更遠是怎麼回事?
再來,紅色慣性小的先滑完捏,同距離下先滑完,不就是平均速度較高嗎?
到底是誰物理不好XD
--
Tags:
公路車
All Comments
By Jessica
at 2014-04-28T08:10
at 2014-04-28T08:10
By Bennie
at 2014-05-02T22:55
at 2014-05-02T22:55
By Sierra Rose
at 2014-05-03T04:40
at 2014-05-03T04:40
By Faithe
at 2014-05-06T05:01
at 2014-05-06T05:01
By Rebecca
at 2014-05-10T13:02
at 2014-05-10T13:02
By Frederic
at 2014-05-12T12:20
at 2014-05-12T12:20
By Hamiltion
at 2014-05-15T13:58
at 2014-05-15T13:58
By Selena
at 2014-05-16T05:45
at 2014-05-16T05:45
By Victoria
at 2014-05-16T07:22
at 2014-05-16T07:22
By Puput
at 2014-05-21T05:03
at 2014-05-21T05:03
By Carol
at 2014-05-21T18:14
at 2014-05-21T18:14
By Skylar DavisLinda
at 2014-05-24T14:45
at 2014-05-24T14:45
By Blanche
at 2014-05-29T08:26
at 2014-05-29T08:26
By Zenobia
at 2014-06-02T20:52
at 2014-06-02T20:52
By Erin
at 2014-06-02T23:46
at 2014-06-02T23:46
By Yuri
at 2014-06-03T04:30
at 2014-06-03T04:30
By Elizabeth
at 2014-06-06T23:13
at 2014-06-06T23:13
By Linda
at 2014-06-07T09:24
at 2014-06-07T09:24
By Heather
at 2014-06-07T17:06
at 2014-06-07T17:06
By Suhail Hany
at 2014-06-10T14:12
at 2014-06-10T14:12
By Delia
at 2014-06-12T08:12
at 2014-06-12T08:12
By Ingrid
at 2014-06-13T13:19
at 2014-06-13T13:19
By Eden
at 2014-06-18T00:39
at 2014-06-18T00:39
By Rachel
at 2014-06-18T19:28
at 2014-06-18T19:28
By George
at 2014-06-21T01:09
at 2014-06-21T01:09
By Frederic
at 2014-06-24T02:46
at 2014-06-24T02:46
By Olivia
at 2014-06-24T23:04
at 2014-06-24T23:04
By Anthony
at 2014-06-29T13:13
at 2014-06-29T13:13
By Poppy
at 2014-07-01T18:03
at 2014-07-01T18:03
By Thomas
at 2014-07-05T16:23
at 2014-07-05T16:23
Related Posts
請問公路車換刀輪適合嗎??
By Queena
at 2014-04-23T01:03
at 2014-04-23T01:03
請問公路車換刀輪適合嗎??
By Hazel
at 2014-04-23T00:33
at 2014-04-23T00:33
請問公路車換刀輪適合嗎??
By Zenobia
at 2014-04-23T00:15
at 2014-04-23T00:15
尋找2010年捷安特FRAIS女用平把公路車桃紅色XS的
By Dora
at 2014-04-23T00:00
at 2014-04-23T00:00
請問公路車換刀輪適合嗎??
By Frederica
at 2014-04-22T22:19
at 2014-04-22T22:19