Rick16's latest activity
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Rick16 replied to the thread Other I would like to get recommendations for graduate level physics books.I have checked those, but I am not looking for big, authoritative books, rather for accessible ones, books that are student-friendly... -
Rick16 posted the thread Other I would like to get recommendations for graduate level physics books in Science and Math Textbooks.I got a bachelor in physics 11 years ago, and I did not continue my studies. I have now decided to embark on a complete review of...
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Rick16 replied to the thread Undergrad Confused about the conservation of angular momentum.Okay, my idea about the external torque is pretty far-fetched. I think I am rather convinced that there is no external torque acting on...
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Rick16 replied to the thread Undergrad Confused about the conservation of angular momentum.So there would be a reaction torque on the fuselage similar to the reaction torque on the car. Very clear explanations, thank you.
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Rick16 replied to the thread Undergrad Confused about the conservation of angular momentum.Very interesting, I never thought of it that way.
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Rick16 replied to the thread Undergrad Confused about the conservation of angular momentum.I meant to say that the energy is ultimately responsible for the torque, and that therefore the torque might be considered external to...
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Rick16 replied to the thread Undergrad Confused about the conservation of angular momentum.Here is the full paragraph: All this leaves me saddened to report that smooth, rotating flying saucers are not a thing. They violate...
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Rick16 posted the thread Undergrad Confused about the conservation of angular momentum in Mechanics.In his book "Take me to your leader", Neil deGrasse Tyson writes that rotating flying saucers cannot exist, because they would violate...
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Rick16 replied to the thread Undergrad Landau Mechanics Chapter 2 Problem 1: Direction of Potential Energy?.Thank you for making this clearer. I briefly thought about how I should go about finding the force from this momentary potential energy...
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Rick16 replied to the thread Undergrad Landau Mechanics Chapter 2 Problem 1: Direction of Potential Energy?.I don't understand the last post. I think the situation is much simpler. I forgot indeed to consider that the potential energies are...
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Rick16 replied to the thread Undergrad Landau Mechanics Chapter 2 Problem 1: Direction of Potential Energy?.I understand the case with a single potential energy field, or perhaps I should rather say force field if I want to speak of the...
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Rick16 posted the thread Undergrad Landau Mechanics Chapter 2 Problem 1: Direction of Potential Energy? in Mechanics.Problem Statement A particle of mass m moving with velocity v1 leaves a half-space in which its potential energy is a constant U1 and...