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Chapter 12, "Energy"WorkW = F D x where D x = displacement and F = force in the direction of displacement. Kinetic EnergyKE = ½ mv 2 where m = mass and v = speed. Work-Energy TheoremW = D KE = KE f “ KE i or
where the force and displacement are in the same direction and v is speed. Gravitational Potential EnergyGPE = mgy where m = mass, g = acceleration due to gravity, and y = height. Conservation of Mechanical Energy (Simplified)KE i + PE i = KE f + PE f or
Conservation of Mechanical Energy (Modified)KE i + PE i = KE f + PE f + E o or
where E o represents other energy (heat/sound). |
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