How much Power..?

[ruggerodk]

The assumption for the Gera wheel axle was 4 inches. The assumption for the weight object was 4 pounds. Using a rope wrapped around a 4 inch axles rotating at 60 RPM produces a lifting speed of 62.83185 Feet/Minute. The weight was lifted up to a pulley attached under the roof outside the window. If this distance was 20 feet then it would have taken about 19 seconds. Again, assumption must be made because no one left us any writen record of exactly how long it took to lift the load or exactly how high the roof was.

If you can give me enough assumptions for your wheel then we can calculate its HP. I need to know how much weight your wheel will pull or lift (not how much it weighs).

All made up by guessing.

Try with the same assumptions as you did with the Gera wheel...but this time changing the weight object involved from 4 pounds to 100.

And please don't tell me that the weight of the weight objects do not matter...otherwise you wouldn't need to make the assumption in your calculation.

What does that give you?

ruggero ;-)

[jim_mich]

If the Gera wheel lifted 100 pounds instead of the assumed 4 pounds then its output HP would be 25 times as great, so ...

HP = 0.0076 × 25
HP = 0.19 Horse Power (a little less than 1/5)

W = 141.7 Watts

This calculation is with the wheel pulling on a rope that lifts a 100 pound weight.

[ruggerodk]

Jim,

Maybe I got the meaning of your wording wrong.

I thought that the 4 pound 'weight object' was the weight inside the wheel...not the mass that was lifted outside the window.

The 'Merseberg' was lifting 70 pounds of bricks.



ruggero ;-)

[jim_mich]

Bessler once removed one of the inside weights and showed it to onlookers. That particular weight was about 4 pounds. I do not remember which wheel was involved. We have no way of knowing how that 4 pound weight was used inside of the wheel or how many of these weights were inside of the wheel. Thus knowing that it weighed four pounds does us no good at all. Except that we might assume how many of these weights might have been used and how far in and out we think they might have moved and we might assume how fast they moved in and out... then we could come up with an estimated HP. But that is one hell of a lot of assumptions, so I don't think the resultant calculations would be anymore than just a wild guess.

[ruggerodk]

Sooo....

The final conclusion on this topic is:

Science cannot tell how much fitness and workout is required to make Flinstone able to 'run' his Flintmobile one single inch.

very disappointing...

Thanks anyway for all your effort.

regards
ruggero ;-)

[Michael]

Sooo....

The final conclusion on this topic is:

Science cannot tell how much fitness and workout is required to make Flinstone able to 'run' his Flintmobile one single inch.

very disappointing...

Thanks anyway for all your effort.

regards
ruggero ;-)

ruggero, if you could state how much mass the car had, how round/or not, the tires are, what the ground was like it was traveling on, how much mass the passengers had, whether or not there was any air resistance, and how fast you wanted the car to move continuously, then science could easily tell you how much energy would be required to make it so. Science can only answer questions that have some legitimate data.

[ruggerodk]

Michael....LOL

Try read the posts carefully before you make a blop like that...find'll exactly all your requested specs.


ruggero ;-)

[jim_mich]

Ruggerodk, I'm sorry to inform you but you did NOT supply enough specs. This is what I've been trying to tell you all along. Now Micheal is telling you the same thing. We cannot help you if you refuse to listen.

[Michael]

Sorry ruggerodk, all I found was this;

I've got a fairytale too:
...
Flintstone's Car is rolling 40 RPM.

If Flintstone rest his feet in the windshield, Flintstone's Car don't roll.

To make it roll, Flintstone has to put his feet on the ground and do some musclework.

How much leg-work does Flintstone has to do?

Science doesn't know?

Apart from that, Greendoor, you have nicely managed to turn around my question.

The question I'm asking is (in your story) is:

"If you allways wanna have 100 cans in the fridge.
How many cans can you possibly sell per day? And how many do you have to put IN to the fridge per day?"

regards
ruggero

[greendoor]

So tell me: just how long (exactly) is a piece of string? Surely Science must have figured this one out by now ...

[mickegg]

.....easy peasy!

So tell me: just how long (exactly) is a piece of string? Surely Science must have figured this one out by now ...

I suppose the scientific answer might be:

" The length of a piece of string is the linear distance between the two ends, measured along the string when the string is drawn out into a line, without any stretching of the material constructing the string, having taken place." <grin>...at standard room temperature, of course!

Regards

Mick

[ovyyus]

Another win for science :D

[ruggerodk]

;-D Ovyuus...

...and a final goodday, gentlemen

regards
ruggero ;-)

[rlortie]

So tell me: just how long (exactly) is a piece of string? Surely Science must have figured this one out by now ...

A piece of string is twice as long as it is from one end to the middle!

[Michael]

A piece of string is twice as long as it is from one end to the middle!

Now that's a good answer. Universal measurement.