hutchphd's latest activity
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hutchphd reacted to kuruman's post in the thread B Why Does Hooke's Law Use a Negative Sign in Scalar Form? with
Like.
Agreed. But who is "we"? I make a distinction between experienced practitioners who've seen and taught it and novices who see it for... -
hutchphd reacted to Herman Trivilino's post in the thread B Why Does Hooke's Law Use a Negative Sign in Scalar Form? with Like.
You are correct. This problem arises in physics textbooks and lectures quite often, and also in other contexts. The source of the...
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hutchphd reacted to Herman Trivilino's post in the thread I Topic about physics axioms, theory, laws etc.. with Like.
Failure to understand this is perhaps the greatest shortcoming of our society.
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hutchphd replied to the thread I Topic about physics axioms, theory, laws etc...You do not understand the unique genius of the scientific method, and therefore you do not understand anything much about physics...
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hutchphd reacted to Dale's post in the thread I Topic about physics axioms, theory, laws etc.. with Like.
That would be a different theory. Staying with my theory that the coin always lands “tails”, how many throws would you require to show...
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hutchphd replied to the thread B Why Does a Spring Return to Its Original Position After Being Stretched?.This is not how the world works. You are in good company: Aristotle made the same wrong assumption. It was shown incorrect by Isaac Newton
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hutchphd reacted to vanhees71's post in the thread I Is Hooke's law really not working, or is it me being dummy? with Like.
That's the result of teaching mechanics in a "calculus-free" way. Without calculus you can't understand most motions. Here it's pretty...
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hutchphd reacted to Chestermiller's post in the thread B Why Does Hooke's Law Use a Negative Sign in Scalar Form? with Like.
For a solid rod experiencing a homogeneous axial extension or compression, the stress tensor (in dyadic tensor notation) is...
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hutchphd reacted to A.T.'s post in the thread I Topic about physics axioms, theory, laws etc.. with Like.
If you want certainty, try religion.
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hutchphd reacted to Dale's post in the thread I Topic about physics axioms, theory, laws etc.. with Like.
Sure, that’s poor wording. It should have been “I only find if scenario B then result X” rather than “I find only if scenario B then...
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hutchphd reacted to Dale's post in the thread I The far reaching ramifications of the work-energy theorem with Like.
Unfortunately this is either incorrect or confusing/misleading for a student. Consider an electric car accelerating at a constant rate...
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hutchphd reacted to Dale's post in the thread I The far reaching ramifications of the work-energy theorem with Like.
1.3 is a little wrong. It should be ##\Sigma F= ma## or ##F_{net}=ma##. The way 1.3 is written is a common way of verbally stating...
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hutchphd replied to the thread I Topic about physics axioms, theory, laws etc...How does one do an "only if" test without "infinite" repetitions? You can put limits on it but how does one do it absolutely? I...
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hutchphd reacted to George Jones's post in the thread I Can Axioms Revolutionize Our Understanding of Physics? with Like.
I like a passage in a book by the (very) mathematical physicist Robert Georch: "It seems to me that "theories of physics" have, in the...
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hutchphd reacted to Dale's post in the thread I Can Axioms Revolutionize Our Understanding of Physics? with Like.
There are lots of papers on various axiomatizations of physics. You may want to start with some research on what has already been done...