問題詳情
11.一端固定，另一端連結一個物體，水平放置某螺旋拉伸彈簧，彈簧率(spring rate)表示為 kO在初始位置時彈簧為自由長度，當物體水平移動 x1 距離(位置 1)至 x2 距離(位置 2)時，由位置 1 至位置 2 彈簧對該物體作功 
為何？
(A) 
(B) 
(C) 
(D) 
參考答案
無參考答案
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