According to F=KX, the tape should be more longer, more elastic, and because the deformation is too large should failure Oh, why can pull out the tape and pull 1 meters 1 decimeter 2 meters back stretch feeling almost? And some pull out 5, elasticity is not invalid? No whole understand, please heroes tell, thank you first. Well, it's only 10 points. I can't give it more
It is not inside the spring structure but a curved spiral disc structure? So F=KX shouldn't work, maybe
Answer your question about the tape measure,One, why didn't the failure; the spring tape is very long, it is completely relaxed to fully tighten large interval, all travel tape included, both ends of a room, so the tape will not fail.Two, pull one meter long and two meters long, not what is the difference between the tape tension; spring is very thin, the deformation of the tightening is also very small, so the reaction is very small, change ruler when they feel not to force.
The tape is commonly used in daily life tools. Steel tape is often seen. It is commonly used in construction and decoration, and is also one of the necessary tools for families. Divided into fiber tape, tape, waist feet etc.. Lubanche, Feng Shui Chi, Chi Gong belong to the same steel tape.I. principleThe tape can be rolled up because the tape inside is provided with a spring, pull the measuring length, the actual scale and the length of the spring is stretched, once the measurement is completed, which will automatically shrink tape springs, effect of scale in the spring force under the following contraction, so the tape will roll up to.Two, characteristicsFirst, the tape strain is too large to fail. Why didn't the failure; the spring tape is very long, it is completely relaxed to fully tighten large interval, all travel tape including, both ends of a room, so the tape will not fail.Two, pull one meter long and two meters long, not what is the difference between the tape tension; spring is very thin, the deformation of the tightening is also very small, so the reaction is very small, change ruler when they feel not to force.Three, classificationThe main types of tape for steel tape, fiber tape is the second, is that we often see the tape, many people say is the tape, there is a waist foot (feet / tailor clothing ruler belongs to this class). In the south of our country and the Hongkong area commonly known as tape tape or ruler. The material is PVC plastic and glass fiber, which prevents it from being stretched during the use of tape measure.Tape, is generally metric, is a 150 cm, the other side is 60 inches. Inch is a common unit of measurement in foreign countries. The size of a TV and a monitor is in inches. And the size of jeans, also in inches. In China, the amount of clothing is the rural common tape. A 150 cm, the other side of the rural 45. Often say 2 feet 1, 2 feet 2 waist, is the rural units.
