Dale's latest activity
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Dale replied to the thread I Board Breaks: Small or Large Deflections?.That makes sense. And with wood the shearing strength will probably be different across the grain from along the grain. -
Dale replied to the thread B Generator shaft rotation through spring and magnet (Is this feasible in Physics?).Then the spring and magnets are not helpful. You want to just have the battery and the generator. When you want to charge the battery...
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Dale replied to the thread I Intuitive look at bending of light by gravity.##\frac{1}{2} mc^2## isn’t anything. Kinetic energy is ##\frac{1}{2} mv^2## and rest energy is ##mc^2##. But nothing is ##\frac{1}{2} mc^2##
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Dale replied to the thread B Use Surface-Volume to approximate gravity for planets and protons.You were lucky this time. Modern LLM’s are not trained to do physics and they hallucinate a lot. They are not considered acceptable...
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Dale replied to the thread I Board Breaks: Small or Large Deflections?.So do that first, for practice and education. Once you have worked through the easy approximation then you will have the experience and...
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Dale replied to the thread I Board Breaks: Small or Large Deflections?.If there are no consequences then it doesn’t matter. But since the whole point is the process, why not do it both ways? That will get...
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Dale replied to the thread I Board Breaks: Small or Large Deflections?.How accurate do you need this to be? I mean, what are the consequences if you are off by say 20%?
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Dale replied to the thread I Boundary conditions for a wooden board used for breaking in martial arts.Yes. That seems correct to me.
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Dale replied to the thread I Boundary conditions for a wooden board used for breaking in martial arts.And what is wrong with simply supported?
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Dale reacted to Ibix's post in the thread I Boundary conditions for a wooden board used for breaking in martial arts with
Like.
I think there might be a difference between what you might do to optimise the breaking process and what you might do in a dojo. A quite... -
Dale reacted to kuruman's post in the thread I Boundary conditions for a wooden board used for breaking in martial arts with Like.
Watch this video. I was the first person to try it.
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Dale replied to the thread I Boundary conditions for a wooden board used for breaking in martial arts.Just a feeling. When I have held boards for someone else to break I have focused on keeping my position as stable and stationary as...
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Dale replied to the thread I Boundary conditions for a wooden board used for breaking in martial arts.I think that simply supported would be more reasonable than clamped.
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Dale reacted to makamo66's post in the thread I Board Breaks: Small or Large Deflections? with Like.
I found this https://members.itkd.co.nz/reference/essays/13-Power_required_to_break_Fuji_Mae_Polar_boards.pdf
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Dale reacted to makamo66's post in the thread I Board Breaks: Small or Large Deflections? with Like.
What I really need is an academic paper that shows experimentally how big the deflection is.