[問題] 滑輪組
這幾天在他板看到的問題
這是國中自然科學複習考卷
http://vip.iplayer.com.tw/home/attachment/201012/14/15969_1292294935JIt2.jpg
此題該如何解釋乙和丙的F是相等的呢
感謝:)
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推
12/17 17:08, , 1F
12/17 17:08, 1F
→
12/17 21:51, , 2F
12/17 21:51, 2F
推
12/17 23:05, , 3F
12/17 23:05, 3F
推
12/17 23:17, , 4F
12/17 23:17, 4F
→
12/17 23:18, , 5F
12/17 23:18, 5F
→
12/17 23:19, , 6F
12/17 23:19, 6F
→
12/17 23:20, , 7F
12/17 23:20, 7F
→
12/17 23:21, , 8F
12/17 23:21, 8F
→
12/17 23:23, , 9F
12/17 23:23, 9F
→
12/17 23:25, , 10F
12/17 23:25, 10F
→
12/17 23:25, , 11F
12/17 23:25, 11F
推
12/17 23:33, , 12F
12/17 23:33, 12F
推
12/18 00:36, , 13F
12/18 00:36, 13F
→
08/13 15:59, , 14F
08/13 15:59, 14F
→
09/17 13:59, , 15F
09/17 13:59, 15F
→
11/09 12:10, , 16F
11/09 12:10, 16F
→
07/06 22:45,
4年前
, 17F
07/06 22:45, 17F