"Reversing the direction" means the anchor point changes. But it just feels like I'm missing something in my math with the second part where B moves up and A moves down. I included a picture of what I'm doing and my math, maybe I am missing something?!?
So A moves half the speed because A has two active rope legs sharing the load and it's where the rope is anchored and where the rope returns to. This lets A move 304 m and B/C each move 608 m...
A gets to have it's weight "doubled" because it is the anchor point of the 2:1 pulley system?
I...
Here is my math and a sketch of the second case... Maybe if someone can just confirm that I'm doing this right. From what I think should happen A should move down 304 meters, and B and C should move 608 meters...
I have Mass A being pulled vertically. I have Mass B on an incline that is pulling Mass A. There is a 2:1 pulley between them.
The math I'm using is:
FA = MA / 2 = ? t-force
MB * SIN(of the incline degree) = ?
If MB is greater then FA, it pulls FA up as MB moves down the incline.
BUT... If I...
Thanks everyone for your help, I've definitely learned a lot and have a much better understanding, I used to hate this sort of stuff as a kid in school, but I find it fascinating these days the mathematical perfection of it all.
Fair enough, I'll endeavor to utilize SI from now on.
So redoing things in SI...
102 tonnes = 102,000 kg
gravity 9.81 m/s2
height 50 m
PE = 102,000 * 9.81 * 50 = 50,031,000 or 50 MJ
I think that's right. But MJ is a measure of energy, not power, it's basically energy stored. So I'd assume...
I have to admit, reading that hurt my brain, but I like a challenge. Both those formulas look the same.
So you're saying the 16 kWh available in the gravity-battery is stored as energy (energy in joules), while the 16 kWh available with the turbine is power (power in watts).
I think that makes...
That's an interesting thought experiment.
So with a granite weight we're looking at 16 kWh with 102 tons of granite dropped from 50 meters.
With 102 tons of water (76301 gallons), that would be releasing roughly 1271 gpm to stretch the hour, or 0.08 m3/s, which is sad. But... P = 0.9 (turbine...
Interesting, not something I've heard of, so that was a learning experience, I appreciate that.
But for this example, lets say that the output from the motor is optimized to allow the motor to function at its ideal RPM constantly. Whether through capacitors or flywheels to stabilize...
I'm not a mechanical engineer, I'm just a curious mind that needs some help understanding the logic here.
I understand that a weight, say 120t granite cube elevated 50 meters has the stored energy of 16 kWh. Thus a gravity battery (Ep = m * h * g).
I'd imagine this has something to do with the...
Brilliant, I wouldn't have thought of that.
Whats "cool" is I typed in the description of what I'm trying to do into CoPilot (AI), basically the same description here except instead of a human a 1 ton stone and it basically told me yes it's possible and this is what you do, which is crazy. It...
I had to go back and edit my messages real quick when I noticed something out of place ;)
No more than about 90% of the starting GPE, sounds good.
In order to get more accurate bearing friction numbers, I assume I'll have to graduate passed abstract boxes and actually build out the mechanism...