自由向量與滑動向量 - 土木
By Annie
at 2009-05-29T02:38
at 2009-05-29T02:38
Table of Contents
課本裡有一題
作用於剛體上的力 可視為(A)自由向量 (B)滑動向量 (C)純量 (D)拘束向量
答案給A
可是我是記 力偶=自由向量
剛體=滑動向量 (力的可傳性)
彈塑體=拘束向量
另外一題是
當一彈性體受外力作用而運動時，此物體產生
(A)外效應 (B)內效應 (C)外及內效應 (D)無效應
答案給B
運動不是外效應嗎 所以我選(C)耶
還是彈性體材料力學 就只有內效應
有人知道嗎
整個不懂 謝謝
→ osir:把課本答案撇掉 然後改成B吧~ 05/29 02:42
※ 編輯: tsanning 來自: 220.134.97.174 (05/29 02:43)
→ tsanning:謝謝樓上對第一題的指教 囧 05/29 02:43
推 allenyen7239:第一題，答案應該是B，力偶矩才是自由向量。 05/29 03:09
→ allenyen7239:至於第二題，答案是C，整個材料力學說穿就是力的外效 05/29 03:10
→ kumoking:那一本課本??公佈一下吧...免的買到廢書 XD~~~ 05/29 03:11
→ allenyen7239:應+內效應，彈性體呈"靜止"狀態，依然有外及內效應! 05/29 03:12
推 allenyen7239:還是不懂就翻翻Hibbeler靜力學吧(4-7節:等效力系) 05/29 03:17
推 allenyen7239:另外，外效應不只包含運動效果(平移、旋轉)，若物體 05/29 03:27
→ allenyen7239:靜止，外效應還包含支承反力 05/29 03:30
→ tsanning:高職的課本台科大的 可能教師手冊沒有勘誤吧 05/29 04:44
→ tsanning:我指台科大勁園出版社 與台灣科技大學無關...補充說明 05/29 04:50
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