問題詳情
1. 如圖所示，起重機機身質量為 1000 kg，G 為其重心，它能舉起的質量最大為 2000 kg 的物體。若 L1＝10 m，L2＝2 m，L3＝4 m，L4＝1 m，M 為一壓塊質量。則壓塊質量大於多少 kg 和小於多少 kg 之間時，才能保證起重機舉起重物或不舉起重物時都不會翻倒， ____(1)_____ kg ≥ 壓塊質量 ≥_______ (2)____ kg
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