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How to tell if an egg is hard boiled without breaking it
Description
The physics behind spinning an egg reveals whether it is hard-boiled or raw by testing its center of mass and angular momentum. While a hard-boiled egg spins as a single, stable solid, the liquid inside a fresh egg creates internal resistance that quickly halts the motion. Discover how Newton's laws of motion make it possible to identify the egg's state without ever breaking the shell.
Original title
איך לדעת אם ביצה קשה בלי לשבור אותה
הפיזיקה שמאחורי סיבוב הביצה חושפת אם היא מבושלת או חיה באמצעות בדיקת מרכז המסה והמומנטום. בעוד ביצה קשה מסתחררת כיחידה אחת יציבה, הנוזל בביצה הטרייה יוצר התנגדות פנימית שעוצרת את התנועה במהירות. גלו כיצד חוקי התנועה של ניוטון מאפשרים לזהות את מצב הביצה ללא שבירת הקליפה.
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