Energy = (Force) (Distance) • Voltage = (Current)(Resistance) • Newton = (meter)(joule)
Potential Energy: PE = m x g x h
PE = 4.53592 kg x (9.8^) x (1.2192 m)
531.5038611456
ASSIGNMENT:
Calculate the energy stored (in joules) in your pendulum using the mass and height measurements, and record this online.

Potential Energy: PE = m x g x h
PE = 4.53592 kg x (9.8^) x (1.2192 m)
PE = 54.192 Joules

Using the duration you measured, calculate the average power, in watts, at which this initial energy was transferred to the environment.

Watt = Joules/second = 54 Watts/second. Each cycle of the pendulum measured just under four seconds.

If you used all the initial potential energy in 10 seconds, what would the power be? 540 Watts

 

Open-circuit voltage: 4 volts without load. (3.7 volts in opposite direction).

Closed-circuit current for your converter 380 milliamperes (3.68 Volts with load on line).

open circuit voltage

Efficiency = Output/Input

A farad is the charge in coulombs which a capacitor will accept for the potential across it to change 1 volt. A coulomb is 1 ampere second. Example: The voltage across a capacitor with capacitance of 47 nF will increase by 1 volt per second with a 47 nA input current.

What if we can figure out how to safely charge batteries and capacitors using electrostatic energy?

Wouldn’t that be something?

Peter Terezakis

Tisch School of the Arts
http://www.terezakis.com

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