lecture 6

lecture 6 - 1 Lecture 6 Introduction to forces Newtons...

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Unformatted text preview: 1 Lecture 6 Introduction to forces Newtons three laws Equilibrium 2 Isaac Newton was the first to discover that the laws that govern motions on the Earth also applied to celestial bodies. Over the next few chapters we will study how bodies interact with one another. 3 Simply, a force is a push or pull on an object. 4 Contact forces : these forces arise because of an interaction between the atoms in the surfaces in contact. A long-range or field force acts even though there is no contact is between bodies. action at a distance 5 Newtons 1 st Law (The Law of Inertia): If no net force acts on an object, then its speed and direction of motion do not change. (Velocity remains constant.) Inertia is a measure of an objects resistance to changes in its motion. 6 If the object is at rest it remains at rest (speed = 0). If the object is in motion it continues to move with constant velocity....
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This note was uploaded on 07/04/2011 for the course PHYS 121 taught by Professor Staff during the Spring '11 term at ASU.

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lecture 6 - 1 Lecture 6 Introduction to forces Newtons...

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