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lab02 - The Physics of Light Sound LAB 02 HOOKES LAW...

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The Physics of Light & Sound Introduction A number of materials in nature have the following property: when stretched, compressed, or otherwise deformed by an external force they regain their previous shape and form when the deforming force is no longer acting on them. These materials are said to be elastic . To qualify as an elastic material the following conditions need to be met: 1) The deformation of the material needs to be proportional to the applied force. 2) The restoring force needs to be proportional (and opposite in direction) to the deformation. The relationship between the restoring force and the amount of deformation of an elastic material is called Hooke's Law . In this experiment you will study Hooke's Law as it applies to metallic springs. Formulae The restoring (elastic) force in an elastic material is: F elastic = -k x (1) Where x is the deformation of the elastic material and k is the spring constant - a characteristic of the material and/or shape of the spring.
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