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levanhy22
2 năm trước
Câu 16 một lò xo có chiều dài tự nhiên là 10cm độ cứng của lò xo là k bằng 100N/m treo thẳng đứng lò xo và móc vào đầu của lò xo một khối lượng m bằng 100g chiều dài của lò xo là bao nhiêu (g bằng 10m/s2) A 10cm B 11cm C 9cm D 12cm
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