Why Does It Become More Difficult To Pedal A Bicycle-powered Generator As The Load Increases?
Thursday, February 18th, 2010 at
8:39 pm
A bicycle-powered generator is hooked up to a light bulb. The rider pedals the bike, lighting the bulb. A second bulb is added to the circuit, and it becomes harder to pedal. Why does this happen as opposed to having to pedal the bike faster?
Thanks!!!
Possibly related posts: (automatically generated)
- Related posts on Become
- upstart » Buck's nights have become a parody
- How All Of Us Have Become Richard Nixon | Disinformation
- “The Real World DC” House To Become A Restaurant | ICT magazine
- Related posts on Bicyclepowered
- A Timeline About Europe 1930-1946 « timergo
- Printable Private Eye Name Badges « roganjob
- America Timeline 1900-1930 « dedeago
- Related posts on Difficult
- How to find a job in this difficult market? : stlplace
- Roach: Initial Rounds will be Difficult for Pacquiao and Clottey ...
- digoBlog: news on tech & games » Blog Archive » Takeuchi: Lost ...
 |
 Look KEO 2 MAX Clipless Road Bike Pedals White  US $83.49
|
 Look KEO 2 MAX Clipless Road Bike Pedals Graphite Grey US $83.78
|
 Shimano SPD PD M520 Mountain Bike Clipless Pedals 9 16 US $15.36
|
i’m no expert here, but i would guess that if you increase the power of one bulb that would be true (increases speed), but adding quantity instead increases the difficulty.
Counter-intuitive, isn’t it?
The reason is that with two light bulbs (in parallel) you decrease the electrical resistance in the circuit. As a result, when you turn the generator, more current flows. The force you are working against is the magnetic force caused by turning wires carrying current in a magnetic field. Since the wires have more current flowing in them, they generate more force when you turn them. When you remove all loads from the generator, current does not flow, and the magnetic force opposing your turning the rotor goes to practically nothing. All you feel is the mechanical friction.
Hi
first basics of an generator/alternator
usually it is an rotating magnet inside coils.
when yuo rotate(turn) magnet it generates el. tension at the ends of coil.when you connect a load to it the current begins to flow.It is proportional to load (ohms law) . this current produces a magnetic field in coil (almost linear proportional to current so to load) .
This field reacts with magnets field and “tries” to stop it. The stopping force is also proportional to load.
Hope this will help.
P.S. sorry for my english.
A very basic answer is…. power input less losses equals power output.
or Input times efficiency equals output…
The more bulb you add unto the circuit, the higher the load, which is higher power output from the generator is required,,,,therefore you have to increase the power input….you require higher torque to rotate the pedals…..
As the load increases the generator has to do more work. More work done by the generator means more work to to be done by the prime mover, which is the cyclist in this case.
The speed remains same but it is like riding with brakes on.
Adriano, testo più grande e più distanziato?
i have the same supplies in photography class at school.
you must have a winnie to say such things.
Going to a reputable aircraft mechanic school is one (and the most common) way to qualify to become an airline jet engine mechanic. Embry riddle is good, Broomfield College (formerly Colorado Aero Tech) is good. Any FAA certificated A&P school (vo-tech, etc.) will teach you the basics, some may have better facilities and training aids than others. It depends on what you want to pay for. The military generally doesn't qualify you to be an A&P because (for example) you might get really good at working on engines but not have any experience in structural repair. Several of my A&P school classmates were former military.
Another way to get your A&P is to do a certain minimum (but fairly extensive) amount of documented On-the-Job training with certificated mechanics and pass your written and oral and practical exams.
Either way, once you get your A&P you really have a 'license to learn'. You probably won't get on with a major U.S. airline right away, since they're looking for some experience. Ways to get experience are through working for a Fixed Base Operator (airport General Aviation services organization), a smaller regional or charter airline, a corporate flight department (although they can be pretty picky also), by working at an aircraft repair station, or by working contract maintenance overseas.
Rocco is a Ruby port of Docco, the quick-and-dirty, hundred-line-long, literate-programming-style documentation generator.
ur mom will die in four hours if u dont right this ten times on ten differnt videos
Is that Hinman? The page won't load on my phone.
posted by miarphe | Phones / Handhelds For Sale | P1000.00 | 0 post | 0 view
free unlimited internet for your cp using globe or smart sim facebook, yahoo, friendster, etc, you can now surf without consuming any load, meaning even if you don’t have cellphone load, you still can use your mobile internet one time activation, one to sawa gamit na ng internet for only 300…
[ free unlimited internet for your cp ]
Money Lost in the Wind as Generator Company Shuts Down: SHENANDOAH (KPTM)– A wind generator company that promoted …
the pedals were correct but the setup was shit.i think his mixing was wrong
I’m done.
If it is purely wind-powered, then a generator cannot keep running at a constant speed forever. However, a large flywheel can retain enough rotational energy to keep a generator running at a constant level for up to five minutes or so. The windmill would get the flywheel into some rotational speed limit, gearing would keep the output speed more or less constant as the flywheel rotates faster due to higher wind speeds, or slower due to diminished winds. The gearing could be as simple as a basic transmission — they have these for bicycles and are automatic, changing gears based on speed.
There you go.
i you did;t know that a electric bike can power your house . what were you thinking
“your a big boy”