Harnessing energy of a rotating mass

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SUMMARY

It is feasible to harness kinetic energy from a rotating bicycle wheel to generate electricity, specifically through the use of bicycle dynamos or generators. By placing magnets on the wheel, a current can be induced in a stationary coil positioned near the axle or at the top of the wheel. This method effectively converts the mechanical energy of the wheel's motion into electrical energy to power lights or other devices.

PREREQUISITES
  • Understanding of electromagnetic induction principles
  • Familiarity with bicycle dynamos and their operation
  • Knowledge of basic electrical circuits
  • Experience with mechanical systems and rotational motion
NEXT STEPS
  • Research the design and functionality of bicycle dynamos
  • Explore electromagnetic induction and its applications in energy generation
  • Investigate the efficiency of different types of bicycle generators
  • Learn about integrating electrical components into mechanical systems
USEFUL FOR

Engineers, bicycle enthusiasts, and anyone interested in renewable energy solutions or mechanical-to-electrical energy conversion methods.

freerangequark
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Is it possible to harness some of the kinetic energy of a rotating mass to convert it to electricity? More to the point... If I wanted to put a light on a bicycle wheel, is there any way to power the light using the uniform accelerated circular motion of the wheel? Or are the gains of centrifugal "force" countered by the centripetal?

It seems that generating energy mechanically like this would require relative motion of some sort... unless I could use the motion to turn a small propeller to turn a generator, etc...

Thanks!
FRQ
 
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I don't think there's anyway to harness that power in the way you're thinking. You could put magnets on the wheel that would generate a current in a coil stationary to the wheel - you could do this near the axle or the top of the wheel.
Can't think of anything other way.
 
They have existed for quite some time, they're called bicycle dynamos or bicycle generators.

http://www.aztlanbicycle.com/images/products/lowrider-lights-mirror/LIGHT_GENERATOR_LIGHT_VISOR_34339.jpg

http://www.freepatentsonline.com/6703716-0-large.jpg

pm5b_amsterdam_bicycle_genr.jpg
 
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