Herman Trivilino's latest activity
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Herman Trivilino replied to the thread B Simple mass/scale puzzle.Is that not also true of the two alternate scenarios I described in Post #7? Do you honestly believe that when you hang 3 lb of bananas... -
Herman Trivilino replied to the thread B Simple mass/scale puzzle.Did you not read Post #7?
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Herman Trivilino replied to the thread B Simple mass/scale puzzle.It appears in Paul G. Hewitt's famous "Next Time Questions". In the instructor's guide, which accompanies his Conceptual Physics...
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Herman Trivilino replied to the thread B Simple mass/scale puzzle.I don't see it as an alternate explanation. Once you go through the sequence of scenarios associated with each situation shown in the...
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Herman Trivilino replied to the thread B Simple mass/scale puzzle.Suppose you eliminate the pulley on the left and tie the cable to a fixed block resting on the table top, as shown in the figure below...
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Herman Trivilino replied to the thread B Why Does Hooke's Law Use a Negative Sign in Scalar Form?.Years ago I was using a textbook that forced the students to make that choice. In other words, ##g=\pm 9.8 \ \mathrm{m/s^2}##. That was...
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Herman Trivilino replied to the thread B Why Does Hooke's Law Use a Negative Sign in Scalar Form?.I do, in the case of two-dimensional motion. Of course I choose ##\theta## to be zero in the case of one-dimensional motion, so I take...
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Herman Trivilino replied to the thread B Why Does Hooke's Law Use a Negative Sign in Scalar Form?.I don't. When I write the one-dimensional kinematic equations I'm writing down the relations between components of that vector. And...
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Herman Trivilino replied to the thread B Why Does Hooke's Law Use a Negative Sign in Scalar Form?.Nothing sacrosanct. It's just an issue of trying to get as many students as possible to comprehend. It's all a matter of preference.
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Herman Trivilino replied to the thread B Why Does Hooke's Law Use a Negative Sign in Scalar Form?.Yes. I always stressed to my students that we have to keep these three things distinct and in the fore: 1. Vectors. 2. Vector...
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Herman Trivilino replied to the thread B Why Does Hooke's Law Use a Negative Sign in Scalar Form?.But I've not seen it written that way, anywhere. By not writing the displacement vector as ##\vec{x}##. No college-level introductory...
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Herman Trivilino replied to the thread I Topic about physics axioms, theory, laws etc...Failure to understand this is perhaps the greatest shortcoming of our society.
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Herman Trivilino reacted to hutchphd's post in the thread I Topic about physics axioms, theory, laws etc.. with
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You do not understand the unique genius of the scientific method, and therefore you do not understand anything much about physics... -
Herman Trivilino replied to the thread B Why Does Hooke's Law Use a Negative Sign in Scalar Form?.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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Herman Trivilino replied to the thread I Topic about physics axioms, theory, laws etc...This question is better phrased as why is there a fastest speed? And why is that the speed of causality and also the speed of light?
