frameworks:newtonian_formalism
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frameworks:newtonian_formalism [2018/03/29 15:17] jakobadmin [Concrete] |
frameworks:newtonian_formalism [2018/04/12 16:23] bogumilvidovic [Concrete] |
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| - | ====== Newtonian Formalism ====== | + | ====== Newtonian Framework====== |
| <tabbox Intuitive> | <tabbox Intuitive> | ||
| - | The Newtonian formalism is a framework that allows us to predict how a system will evolve. | ||
| - | The basis of it is summarized by three laws, commonly called "Newton's laws of motion": | ||
| - | * **First law:** No force is needed to keep an object moving. If an object is at rest, it will remain at rest unless a force acts on it. Similarly, if an object moves with some constant velocity, it will keep moving unless a force acts on it. | ||
| - | * **[[equations:newtons_second_law|Second law]]:** The way the movement of an object changes depends only on two things: its mass and the total force acting on it. | ||
| - | * **Third law:** Whenever an object exerts a force on another object, inevitably this second object will also exert a force of equal magnitude on the first object. | ||
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| The solution is called the trajectory of the object and describes the position of the object for every moment in time. This is one framework for classical mechanics and it‘s useful for many, many things. | The solution is called the trajectory of the object and describes the position of the object for every moment in time. This is one framework for classical mechanics and it‘s useful for many, many things. | ||
| - | Every student of physics must solve Newton's second law for many different situations. | + | Every student of physics has to solve Newton's second law for many different situations. |
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| <tabbox Abstract> | <tabbox Abstract> | ||
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| <tabbox Why is it interesting?> | <tabbox Why is it interesting?> | ||
| + | The Newtonian formalism is a framework that allows us to predict how a system will evolve. | ||
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| + | It is still one of the most popular ways to describe what happens in a physical system. In contrast to the alternative [[frameworks:schroedinger_framework|Schrödinger framework]] it is much easier to understand what is going on, since only concepts that are directly familiar to high-school students are used. | ||
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| + | ---- | ||
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| + | <blockquote> | ||
| + | Nature and Nature’s laws lay hid in night: | ||
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| + | God said, "Let Newton be!" and all was light. <cite>Alexander Pope</cite></blockquote> | ||
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| - | The Newtonian formalism is still one of the most popular ways to describe what happens in a physical system. In contrast to the [[:frameworks|alternatives]] it is much easier to understand what is going on, since only concepts that are directly familiar to high-school students are used. | ||
| </tabbox> | </tabbox> | ||
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