Ring and ball: Ball fits through ring only after ring is heated.

4A30.21 • C+70+15

diagram for demo

Ring and Ball: Ball fits through ring only after ring is heated. When the brass ring and ball are at room temperature, the ball will not pass through the ring. When the brass ring is heated (about 10 seconds), the ring expands and the ball will easily pass through the ring. TEMPERATURE AND EXPANSION

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