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@pekhanhthu:
thư nè💥
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Region: VN
Friday 04 September 2026 10:20:00 GMT
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Did you know train wheels are designed to rotate and steer automatically on curved tracks? 🚆 Unlike car wheels, train wheels are slightly conical in shape. This subtle design plays a crucial role in how trains move smoothly along the rails. When a train enters a curve, the wheelset shifts slightly to one side. The wheel on the outer rail then rolls on a slightly larger diameter, while the inner wheel rolls on a smaller diameter. Because both wheels are connected by the same axle, this difference in rolling distance naturally guides the train through the curve without needing a steering mechanism. A simple shape, but a brilliant piece of physics that keeps trains stable and efficient on the tracks. 📍Follow @presentatia for more interesting insights.
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