Tag Archives: Motion

Is potential energy the same in free fall as circular motion?

Posted on May 15, 2012 by admin| 3 Comments

I’ll use values to try and get my question across. If a 1 kg block is being dropped straight down, will it have the same potential energy as a block attached to a 1m string being dropped from 90 degrees assuming it stops at 0 degrees? Assuming I did the calculations properly (1 x 9.81 x 1) the potential energy should be 9.81 for free fall. Would this be the case in the other situation?
Edit: As Cirric said, the real question is “would they strike with equal force?”
Edit2: I have just been told that height can be shown as L(1-cos[theta]) where L is the length of the string. This would lead me to beleive that the potential energy should be the same since cos[90] (or cos[pi/2]) is zero. Is this correct?

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Posted in Solar Power

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What do you know about Wind Turbines?

Posted on May 9, 2012 by admin| 1 Comment

In the old days, Wind turbines were used to gather energy like they do now. So were water wheels. Today’s technology is much more complicated. But back in those days, what were the Components of the wind turbine? Or the Water Wheels? What exactly happens that makes the motion from the wind mill or the water wheel turn into energy? Or, to put it a little easier, do you know of a website that explains it?

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Giant Water Parabola Solar Cooker 1000f where there is water there is fire slow motion popcorn

Posted on February 25, 2012 by admin| 50 Comments

Giant Water Parabola Solar Cooker 1000f where there is water there is fire slow motion popcorn

www.greenpowerscience.com This is a 43″ diameter water parabola lens that can reach in excess of 1000f The water lens is running at about 80% of maximum power. The water needs to be distilled, rain or R/O for maximum power. I used well water to demonstrate that it will work with groundwater. The popcorn was filmed with a Casio EXILIM Pro EX-F1. Main video Canon canon XH A1 Last siphon scene Canon 7d
Video Rating: 4 / 5

Millions of the poorest people in the Philippines live without electricity. Many are informal settlers who connect themselves to power sources illegally, often leading to fires breaking out in their homes. Now, a new and cheap solar-light idea is providing an answer for a growing number of Filipinos. Al Jazeera’s Marga Ortigas reports from Manila, the Philippines.
Video Rating: 4 / 5

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Posted in Solar Power

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What is the best way to build an induction generator that is run off the power of my choosing (ie. wind turbin

Posted on January 15, 2012 by admin| 3 Comments

I am interested to know if anybody here has successfully built an induction generator that can be powered by anything that can provide circular motion
I have looked into various ways of using rotation to generate AC electricity. I think I have some fairly good ideas as to how to provide the rotation, but I’m looking for the best solution as to turning that into Alternating Current.

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Posted in Water Power

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Why should the U.S of America depend on …..OIL ….import(s)?

Posted on December 28, 2011 by admin| 4 Comments

The speed to which we travel.We had the 55 mph speed limit [in the earler 1970s].THE lights are turned off ( motion detectors in use )Solar /water and Wind power are the ways we should live .Steam /pedal/horse/and your leather personal carriers aka boots/shoes .Are ways we need to use before its too late. Do you agree .OR…..

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Posted in Wind Power

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Is perpetual motion/ free energy possible?

Posted on December 27, 2011 by admin| 13 Comments

Is perpetual motion/ free energy possible?

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Posted in Solar Power

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Concept SL-100 32 LED Solar Security Light with Motion Detector

Posted on December 25, 2011 by admin| 3 Comments

Concept SL-100 32 LED Solar Security Light with Motion Detector

Concept SL-100 32 LED Solar Security Light with Motion Detector

  • 32 wide-angle LEDs with 190 ft range
  • Designed & engineered for reliable outdoor use
  • Completely solar-powered with no need for electrical wiring
  • Up to 10 hours of operation on full charge
  • Built-in motion detector with photocell sensor allows auto-on & security protection

Add low-maintenance security light with this motion sensor, solar powered outdoor light. Just position the panel in a sunny location. At night, the light will automatically turn on when motion is detected and turn off again after a user-defined timer setting. No wiring is required, making this ideal for remote or hard to light locations. Brightness is equivalent to a 20 watt bulb. White finish UV protected plastic and ABS housing. Solar powered. Auto on/off with motion detection on. Includes 32 wide-angle LEDs. Includes a 4 volt rechargeable lead acid battery. Operates up to 10 hours on a full charge. Covers range of 190 feet. Solar panel is 1/2″ deep, 13 1/2″ wide, and 7 1/4″ high. Light is 9 3/4″ wide, 9″ deep and 14 3/4″ high.

List Price: $ 79.95

Price: [wpramaprice asin="B002KYNCRM"]

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Posted in Solar Power

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