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Displacement equals time X velocity. Everyone knows this formula. But in the real world, there is nothing we can look at the motion only with this formula because, the world is much more complex than one-sentence formula.
Let's look at the train. Rokko liner in Kobe, Japan, just for the example. Let's investigate the motion of this train, then, we might can find more details about the motion in the 'world'.
Click to study more!
Hooke’s Law basically says extension of spring and force is proportional. For example, when the weight hang on the spring gets double, the extension of spring will also be double. My data and graph exactly follows this law. The graph is linear. This means a lot of thing. The slope of the graph is 103.5 [(0+207)/2.0]. This represents that the spring stretches 103.5mm by adding 1N every time (until the elastic limit, where the spring cannot keep its spring force and breaks). In other words, in the formula of Hooke’s Law [y=kx], k for this spring is 103.5. Then, regardless the value of k, it is same that the extension of graph is proportional.
This law is also shown in my investigation. Click to see more.
