the simple pendulum a classic case study
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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. - PowerPoint PPT PresentationTRANSCRIPT
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The Simple PendulumA Classic Case Study
New Core Curriculum:Foundations of Scientific Process
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Mechanical energy
Chemical energy
Radiant energy
Electrical energy
Nuclear energy
Various Forms of Energies
Let’s review from last time….
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Forms of Energy Nuclear
Electrical
RadiantChemical
Mechanical
Heat
Eng
ine
Fric
tion
Elec
toly
sis,
char
ging
stor
age
batte
ry
Batte
ry, F
uel C
ell
Oxidation
Photosynthesis
Electric Motor
Electric GeneratorGa
mm
a
Fusio
n
Solarcell
Light-bulb
Friction,burning
Heat engines
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ENERGY =WORK +
HEAT
• 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
Don’t Confuse Power, Work & Energy…
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WORK not concerned with a nature of the task, tiredness, etc. defined as force acting through certain distance
units: Joules, calories (cal), nutritional Calorie (kcal)
Don’t Confuse Power, Work & Energy…
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HEAT energy of atomic / molecular motion this energy always flows from warmer to cooler object
units: Joules, calories (cal), nutritional Calorie (kcal)
Don’t Confuse Power, Work & Energy…
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POWERP = W / t
work being done in a certain time frame
units: [J/s = Watts, horse power: 1 hp = 746 W]
Don’t Confuse Power, Work & Energy…
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Energy Can Be Classified As Kinetic (KE) or Potential (PE) Energy
PE can be converted to KE and KE can be converted to PE
Etotal = KE + PE
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Activity: The Simple Pendulum A Hands-on Case Study
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The Period vs. Angle
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Relative Masses of the Bobs
Cork 16g Chrome 66 g
Wood 58 g Brass 72 g
Aluminum 26 g Steel 95 g
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