A Complete Collection of 100000 Whys
Fav十万个为什么
为什么一颗苹果会从树上掉下来?
一颗苹果从树上掉下来,主要是由于地球引力和苹果成熟后自身重量的共同作用。具体原因如下:
1、地球引力:地球对苹果施加了向下的引力,这种力被称为重力。重力是地球对物体的吸引力,使得苹果受到向下的作用力,从而离开树枝并下落到地面。
2、苹果成熟后重量增加:随着苹果成熟,其果肉变得更加饱满,重量增加。当苹果的重量超过果蒂的承受能力时,果蒂无法支撑苹果的重量,导致苹果自然脱落。
3、果蒂的松动:苹果成熟时,果蒂会逐渐失去弹性和支撑力,同时果蒂与树枝的连接也会变得脆弱。这种松动进一步削弱了苹果与树枝的连接,使得苹果更容易在重力作用下掉落。
总结:苹果从树上掉下来主要是由于地球引力的作用,同时苹果成熟后重量增加和果蒂松动也起到了关键作用。这些因素共同作用,使得苹果最终脱离树枝,掉落在地面上。
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