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5.長 3m,質量為 10 ㎏之梯子,斜靠在一光滑牆上,設地板與梯腳之靜摩擦係數 μs=0.3,則一質量量為 60 ㎏之工人爬至距離梯腳 2m 處工作是否安全?請計算說明之。
問題詳情
5.長 3m,質量為 10 ㎏之梯子,斜靠在一光滑牆上,設地板與梯腳之靜摩擦係數 μs=0.3,則一質量量為 60 ㎏之工人爬至距離梯腳 2m 處工作是否安全?請計算說明之。
參考答案
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