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→ CamryHybridQ: 水平力平衡,當然水平力都要列出來平衡啊。05/16 19:48
→ CamryHybridQ: …建請先研讀靜力學。05/16 21:23
→ asita: 因為他取的是K線右邊自由體圖,所以右邊出現的所有力都要 05/16 23:44
→ asita: 算進去05/16 23:44
→ CamryHybridQ: 自由體切得好,力學算到老,但是瑞凡…,這題不用05/16 23:48
→ CamryHybridQ: 切…。05/16 23:48
→ CamryHybridQ: 哈,回錯了,不用切的是你推文放的那題。05/17 01:40
→ CamryHybridQ: 這題簡單講,題解是用右側的自由體來平衡,所以反力05/17 01:44
→ CamryHybridQ: 也要計入;如果以左側自由體來算,當然是直接算a點05/17 01:44
→ CamryHybridQ: 的力平衡就好了,答案理論上是要一致。05/17 01:44