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[题目]一铁块重 G_1,置于浮在水面木块的上面,恰能使木块全部浸入水中.(如图1)如果把重 G_2的铁块挂在木块的下面,也恰能使木块
[Title] An iron block weights G_1 and is placed on the surface of a wooden block floating above water, just to make the block completely immersed in water. (Fig. 1) If the weight of G_2 is hung under the block, it can also be Make wooden blocks