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Can anybody make a car that runs on the energy stored after the car gets moving forward? |
A bicycle can power a light as the wheel spins while touching a small turbine... Why can't a car run itself on the same principal? You seem to be asking if perpetual motion is possible... it isn't. Look up perpetual motion on google... the first problem mentioned is friction, which is what a cars motive force is dependant on. However, regenerative braking has been developed to efficiently recapture the 30% of engine output that is lost during city driving conditions. Source(s): http://www.rmi.org/sitepages/pid433.php... Unfortunately no. It is impossible because you would be losing energy in the form of friction. This is just common physics knowledge. Any elementary-school physics website could give you a better explanation. http://physicsweb.org/ http://physicsweb.org/ A human body doing heavy exercise can burn 60 watts more than basil metabolism, which means that you can run a low-power bulb from a generator that uses pedal-torque as input. However, you can't get out more energy than the bicycler can put in. And in practice, you can't take out even so much energy that the extra effort needed to propel the bicycle begins to ANNOY the rider. A car uses the same principle with the same limitation. The engine burns gasoline, and the energy of combusion moves the car forward. As the car moves forward, some of the kinetic energy goes back into the alternator (or generator) of the car, which turns in the direction which charges the battery. But, again, you can only take this process so far. You can't take out of the drive train so much energy that the extra cost (of more gasoline) begins to annoy the driver. Actually, a hybrid does just that. On the highway, a car produces more energy than needed to run itself, the radio, the a/c or anything else. Instead of being wasted, the extra energy is stored in the car's battery and further powers the car. My coach from CRoss Country. He has a hybrid and explained this to me one day about a week ago. |
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