大多数物品都有大有小、有轻有重,怎样才能让它们保持平衡呢?1直尺平衡术用黏土捏两个大小不同的圆球。在每个圆球上绕一根细绳,分别系在直尺两端。在直尺中间系好绳子,挂起来。你能只移动大球,就让直尺保持平衡吗?2十字木棍把两根木棍摆成十字形,中间用黏土固定。在黏土球上绕好细绳,挂起来。现在,按照图中的样子拴好纸飞机。你能让它们保持平衡吗?木棍两端的物品重量均等,木棍才能保持平衡。把木棍挂起来,左右移动两侧的物品,就可以找到平衡点了。 Most items are large and small, light and heavy, how can we make them balance? 1 straightening balance with clay pinch two different sizes of balls. Around each ball around a string, respectively, tied at both ends of the ruler. Tie the rope in the middle of the ruler and hang it up. You can just move the big ball, let the straightedge balance it? 2 cross stick put two sticks in a cross shape, the middle with clay. Wrap the string around the clay ball and hang it up. Now, tie the paper plane as shown. Can you keep them balanced? The weights on the ends of the sticks are equal and the sticks are in balance. Hang the sticks and move the items on either side so you can find the balance.