標題:
力學~雞蛋撞地球
發問:
我想問下雞蛋撞地球原理 我用海棉包住隻雞蛋，再裝起個紙皮箱入面，再起3樓掉落地下，雞蛋無爛，我想問下係咩原理導致雞蛋唔爛? 中英回答皆可
最佳解答:
It is because of the "impulse-momentum" principle in physics. When the falling egg strikes the ground, it has a sudden change in momentum. By the impulse-monemtum formula: impulse (= force x time of impact) = change in momentum For a given change in monemtum, the same impluse can be provided by lengthening of the time of impact, thus lowering the imapct force. The use of the foam is provide for a "short distance" that the egg could move, by compressing the foam, when the box is hitting the ground. This tends to lengthen the time of impact, and thus leads to a lower impact force which may not be strong enough to break the egg.
其他解答:
此文章來自奇摩知識+如有不便請留言告知
應該是因為海棉有卸力的作用,而且紙皮箱有保護的作用,雞蛋的表面也有卸力的作用(它是曲面的).
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