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  1. Ugarik

    Indentation Calcs

    The hinges act as support points. The fact that the rod is longer doesn't affect the result
  2. Ugarik

    Indentation Calcs

    Positive and negative torques acting on the rod are equal in magnitude as long as the rod is static. So it doesn't mater if we chose those that act in clockwise or counter-clockwise direction.
  3. Ugarik

    Indentation Calcs

    In that case we can define bending moment M as counter-clockwise torque at that point. M = N1*x+N2*(y+z). Force F is not in the equation since it acts in the opposite direction. In statics sum of all forces acting on the rod has to be zero, otherwise it would accelerate in the direction of...
  4. Ugarik

    Indentation Calcs

    Yes. Negative and posive torque components do counteract. In fact they are equal in magnitude and thefore make net-torque zero. But it doesn't mean the rod it not under bending load. It just means that it's not rotating as the result of all those forces. The bending moment calculated from...
  5. Ugarik

    Indentation Calcs

    Okay so in this case we have two forces aplied in the opposite directions y distance appart from each other like in the picture below: Since both F1 and F2 are aplied by a single hand they have to be equal due to Newton's third law. In order to find the bending moment M we have to figure...
  6. Ugarik

    Chainsaw Man LS Upgrade

    How is this an LS feat. Haven't we agreed not to calcute LS from stricking?
  7. Ugarik

    Expanding the References for Common Feats page

    Pretty sure mantle is solid. Also gravitational field g should go down the deeper you go according to Gauss' law.
  8. Ugarik

    This is not about complexity either. I don't find my method any more compicated since it only...

    This is not about complexity either. I don't find my method any more compicated since it only uses different values and take into account the level of fragmentanion. But doing that would require us to revise tens of thousands of profiles and pages and nobody wants to do that.
    • Ugarik
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  9. Ugarik

    I do have a lot to add about this but I don't really see a point since it's clearly not about...

    I do have a lot to add about this but I don't really see a point since it's clearly not about accuracy.
    • Ugarik
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  10. Ugarik

    Indentation Calcs

    Yes, unfortunately this formula only works for bending long poles or flat sheets across their entire length. I have absolutely no idea or how to calcute a randomly shaped dent on a flat sheet
  11. Ugarik

    Hasn't it been evaluated already?

    Hasn't it been evaluated already?
    • Ugarik
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  12. Ugarik

    Shoot. But I don't promise i'll make it

    Shoot. But I don't promise i'll make it
    • Ugarik
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  13. Ugarik

    Indentation Calcs

    In this context moment of inertia means this. It is used to calculate elastic section modulus. The mass moment of inertia is calculated in a very similar way hence the same name. In fact if we multiply area moment of inertia by density we will get mass moment of inertia where neutral axis turns...
  14. Ugarik

    Indentation Calcs

    This V bending calculator uses the method I've shown above. It assumes rectangular cross section, fully plactic deformation, and 3-point bending (case 3 in the picture above). It also uses ultimate tensile strength instead of yeild strength to get the highest result posible. Yeild strength is...
  15. Ugarik

    Indentation Calcs

    Since the whole thing was never resolved I'm going to explain bending formula. I am not going to cover the math explaining how it works (Although I can do it in case further explanation is required) but I am going to make a quick guide. If the bending deformation is plastic the first thing we...
  16. Ugarik

    Is this thread still relevant? https://vsbattles.com/threads/indentation-calcs.159931/ I'm...

    Is this thread still relevant? https://vsbattles.com/threads/indentation-calcs.159931/ I'm probably the first user to use this method for bending metal and I believe I have a really good understaning on how it actually works
    • Ugarik
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  17. Ugarik

    I accepted the calc but it most graphic editors you can directly measure area of pretty much...

    I accepted the calc but it most graphic editors you can directly measure area of pretty much any arbitrary shape using selection tool
    • Ugarik
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  18. Ugarik

    Everything else in the second part looks fine

    Everything else in the second part looks fine
    • Ugarik
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  19. Ugarik

    In this secific case KE is calculated differently. KE = 0.4πρ(R^5-r^5)/t^2 where ρ is density of...

    In this secific case KE is calculated differently. KE = 0.4πρ(R^5-r^5)/t^2 where ρ is density of the planet. R and r are radii of the planet before and after the contraction. I derived this formula with DontTalkTD a while ago.
    • Ugarik
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  20. Ugarik

    Frieren: Beyond Journey's End Discussion Thread

    How does Stark only have average human lifting strength? I definatly remember Eisen lifting a big boulder over his head. Like Class 100 big. Even if the doesn't somehow scale it should be at least athletic level. Also why do mages have 10-B psysicaly tier? Is that even important?
  21. Ugarik

    Calculation Evaluations (New forum)

    No. This formula assumes 70 degree FoV hence there is tan(35) in it. When you're using a portion of the original image we know for a fact that your FoV is below 70 degrees and we can no longer use that assumption.
  22. Ugarik

    Speed from Heat Standards

    I'm sorry about nerco but I actually derived the formula here
  23. Ugarik

    Frieren: Beyond Journey's End Discussion Thread

    There is definatly something wrongwith these fire calcs. This fire tornado is nothing compared to 12 kT nuke that was droped on Hiroshima in terms of both size of the fire blast and its temperature.
  24. Ugarik

    Frieren: Beyond Journey's End Discussion Thread

    I think this feat is an outlier since nobody could melt it back. In fact they didn't even need to melt the whole thing
  25. Ugarik

    Nothing, this is just what it is

    Nothing, this is just what it is
    • Ugarik
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  26. Ugarik

    VSBATTLE WIKI REVISION: "INCONSISTENT SIZES"

    I don't understand what the problem is. Type A uncertainty always exists even if we don't take multiple measurements to assess it. It all makes sense from metrological standpoint if we can consider the author an uncertainty contributor
  27. Ugarik

    VSBATTLE WIKI REVISION: "INCONSISTENT SIZES"

    I agree with the AP there. All measurements are acurate to a degree and every measured value has an uncertainty. Taking multiple measurements to calculate the average actually does reduce type A uncertenty/stardart error hence making our final result more accurate.
  28. Ugarik

    Jujutsu Kaisen Discussion Page #1

    There's one huge problem with black flash. It is stated that black flash amplifies the attack to the 2.5 power which doesn't make any scence if you think about it. It cannot even be evaluated numerically
  29. Ugarik

    Additional revisions for Senran Kagura

    Last hypersonic calc is invalid since the truck rotates across the axis passing though its centel and centrifugal force only describes the stress the truck experiences. In fact even if centrifugal force does push agains the umbrella you only need to push it upwards to counter that force. There's...
  30. Ugarik

    You have to use outer sufrace area for heat radiation because heat can only be transfered outwards

    You have to use outer sufrace area for heat radiation because heat can only be transfered outwards
    • Ugarik
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  31. Ugarik

    Breaking Something in Half

    Sorry about nerco but just to show you how much we're off breaking a 30x15 cm block of reinforced concrete only yeilds 350 J.
  32. Ugarik

    Calculation Evaluations (New forum)

    That's actually the force reqiured to pull a spoon apart. Bending it would yeild way less force
  33. Ugarik

    Breaking Something in Half

    Yes No, we've been aware for a while that it's not how material fragmentation works in real life at all. It's not even because the real method is too conplicated so we have to use an oversimplified one. I even know an almost equaly simple yet way more realistic method. The truth is it's just...
  34. Ugarik

    Expanding the References for Common Feats page

    That's because nylon ignites at 500 degress centigrade while cotton at only 120. Just replace 100 with 480 in my formula above. You'll get almost exactly the same result
  35. Ugarik

    Expanding the References for Common Feats page

    Atually I tried calculating it and it's way easier than I expected. So drag force formula is F = 1/2*ρv^2*C*A. If we multiplity it by velocity we'll get power. W = 1/2ρ*v^3*C*A. Let's assume that only 50% of that is being converted to heat: W = ρ*v^3*C*A. Heat transfer rate formula is W =...
  36. Ugarik

    Expanding the References for Common Feats page

    No, first of all he ignored heat transfer rate and heat radiation. Those are two most important parts. Second, avg cross sectional area of human body is 0.67 m^2 not 1.67.
  37. Ugarik

    Expanding the References for Common Feats page

    Using values above: Density: 7.874 g/cm^3 Boiling point: 2862 °C Heat of fusion: 13,810 J/mol Heat of vaporization: 340,000 J/mol Molar Heat Capacity 25.10 J/(mol*K) Molar Mass: 55.8450 g/mol 25.10*(2862-20 C)+13810+340000 = 425144 J/mol 55.845 amu / 7.874 g/cm^3 = 7.09 mol/cm^3 425144 *...
  38. Ugarik

    The lightning was 40 m long and it crossed that distance in two frames. Asuming the lightning...

    The lightning was 40 m long and it crossed that distance in two frames. Asuming the lightning was traveling at 440 km/s we can conclude that each frame is 0.000045 seconds long
    • Ugarik
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  39. Ugarik

    Kinetic Energy questions

    That depends on frame of reference. If the train keeps moving after the collision it means its kinetic energy was not absorbed.
  40. Ugarik

    Kinetic Energy questions

    Mass of the character only
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