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The Simple Pendulum A Classic Case Study

New Core Curriculum:. Foundations of Scientific Process. The Simple Pendulum A Classic Case Study . Various Forms of Energies. Mechanical energy. Chemical energy . Radiant energy. Let’s review from last time…. Electrical energy. Nuclear energy. Mechanical.

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The Simple Pendulum A Classic Case Study

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  1. New Core Curriculum: Foundations of Scientific Process The Simple Pendulum A Classic Case Study

  2. Various Forms of Energies • Mechanical energy • Chemical energy • Radiant energy Let’s review from last time…. • Electrical energy • Nuclear energy

  3. Mechanical Forms of Energy Gamma Fusion Nuclear Electrical Oxidation Photosynthesis Friction, burning Solar cell Electolysis, charging storage battery Friction Heat Engine Battery, Fuel Cell Radiant Chemical Light- bulb Heat engines Electric Motor Electric Generator

  4. ENERGY = WORK + HEAT Don’t Confuse Power, Work & Energy… • In colloquial language, ENERGY is equated with vigor, liveliness and vitality • In science, ENERGY is defined as the ability to do work and transfer heat

  5. WORK Don’t Confuse Power, Work & Energy… • not concerned with a nature of the task, tiredness, etc. • defined as force acting through certain distance units: Joules, calories (cal), nutritional Calorie (kcal)

  6. Don’t Confuse Power, Work & Energy… HEAT • energy of atomic / molecular motion • this energy always flows • from warmer to cooler object units: Joules, calories (cal), nutritional Calorie (kcal)

  7. Don’t Confuse Power, Work & Energy… POWER • work being done in a certain time frame P = W / t units: [J/s = Watts, horse power: 1 hp = 746 W]

  8. Energy Can Be Classified As Kinetic (KE) or Potential (PE) Energy Etotal = KE + PE PE can be converted to KE and KE can be converted to PE

  9. Activity: The Simple Pendulum A Hands-on Case Study

  10. The Period vs. Angle

  11. Relative Masses of the Bobs

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