[問題] 力的作功會隨著觀察者不同而改變嗎?
抱歉不知道該取什麼標題好 囧>
今天算題目遇到一個問題:
一個物體在一臺長 L 的滑車左端,物體與滑車間沒有摩擦力,而滑車以等速 v 在地面
上滑行,今對物體施以水平向右之定力 F,讓物體作等加速度運動,要求物體離開滑車
右端前,外力對物體所做的功...
我的疑問是,如果以滑車的座標系來看,那物體的位移就只有 L 而已,但是若以地面
的座標系來看的話,物體的位移就不是 L 了 =.=" 那麼外力所做的功該如何計算??
先謝過各位鄉民了 <(_ _)>
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推
06/29 22:39, , 1F
06/29 22:39, 1F
推
06/29 22:44, , 2F
06/29 22:44, 2F
→
06/29 22:47, , 3F
06/29 22:47, 3F
→
06/29 22:56, , 4F
06/29 22:56, 4F
推
06/29 22:58, , 5F
06/29 22:58, 5F
→
06/29 22:59, , 6F
06/29 22:59, 6F
推
06/29 23:12, , 7F
06/29 23:12, 7F
→
06/29 23:13, , 8F
06/29 23:13, 8F
推
06/29 23:20, , 9F
06/29 23:20, 9F
→
06/29 23:22, , 10F
06/29 23:22, 10F
→
06/29 23:24, , 11F
06/29 23:24, 11F
推
06/29 23:26, , 12F
06/29 23:26, 12F
→
06/29 23:27, , 13F
06/29 23:27, 13F
推
06/29 23:27, , 14F
06/29 23:27, 14F
→
06/29 23:27, , 15F
06/29 23:27, 15F
→
06/29 23:28, , 16F
06/29 23:28, 16F
推
06/29 23:29, , 17F
06/29 23:29, 17F
推
06/29 23:30, , 18F
06/29 23:30, 18F
推
06/29 23:32, , 19F
06/29 23:32, 19F
→
06/29 23:33, , 20F
06/29 23:33, 20F
→
06/29 23:33, , 21F
06/29 23:33, 21F
推
06/29 23:35, , 22F
06/29 23:35, 22F
推
06/29 23:39, , 23F
06/29 23:39, 23F
→
06/29 23:40, , 24F
06/29 23:40, 24F
推
06/29 23:42, , 25F
06/29 23:42, 25F
→
06/29 23:43, , 26F
06/29 23:43, 26F
→
06/29 23:47, , 27F
06/29 23:47, 27F
推
06/29 23:51, , 28F
06/29 23:51, 28F
推
06/29 23:52, , 29F
06/29 23:52, 29F
→
06/30 00:08, , 30F
06/30 00:08, 30F
→
06/30 00:20, , 31F
06/30 00:20, 31F
推
06/30 00:22, , 32F
06/30 00:22, 32F
推
06/30 01:44, , 33F
06/30 01:44, 33F
推
06/30 02:50, , 34F
06/30 02:50, 34F
→
06/30 02:51, , 35F
06/30 02:51, 35F
→
06/30 02:51, , 36F
06/30 02:51, 36F
→
06/30 02:51, , 37F
06/30 02:51, 37F
→
06/30 07:58, , 38F
06/30 07:58, 38F
推
06/30 12:55, , 39F
06/30 12:55, 39F
→
06/30 12:56, , 40F
06/30 12:56, 40F
→
06/30 12:56, , 41F
06/30 12:56, 41F
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