問題詳情
右圖為兩條原長相等的彈簧A(彈力常數k)與彈簧B(彈力常數K)，兩彈簧的上端相距L，並繫於水平衡桿上。
6.下端則懸掛一長度L的細棒，棒上的P點吊有一質量為m的物體，此時兩彈簧有相同的伸長量d，且細棒保持水平狀態，若忽細棒的重量，已知重力加速度大小為g，求彈簧的伸長量d=?
6.下端則懸掛一長度L的細棒，棒上的P點吊有一質量為m的物體，此時兩彈簧有相同的伸長量d，且細棒保持水平狀態，若忽細棒的重量，已知重力加速度大小為g，求彈簧的伸長量d=?
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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