haruspex's latest activity
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haruspex replied to the thread Vertical Circular motion- A confusing question.Most of the textbook work on such systems is for small oscillations. If they fail to mention "as long as the string remains taut” when... -
haruspex replied to the thread Help on reflection of a wave from fixed end without transmission.As I wrote in post #7: In post #15, I should have been more specific: I meant the sort of assumption A.T. was making about where the...
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haruspex replied to the thread Help on reflection of a wave from fixed end without transmission.So what would "answer key" refer to in that reading?
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haruspex replied to the thread Help on reflection of a wave from fixed end without transmission.I see no need to be making any assumptions. Post #1 says he got +2 sin(4x+8t) by plugging his parameters into the formula.
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haruspex replied to the thread Help on reflection of a wave from fixed end without transmission."reflection of a wave from fixed end"
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haruspex replied to the thread Vertical Circular motion- A confusing question.Using this fact given to you is one thing, but you need to understand why it is true. If you do not, draw a free body diagram for the...
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haruspex replied to the thread Vertical Circular motion- A confusing question.If you still are stuck on that after all the above replies, consider the bob as it approaches the top of the circle. It would be moving...
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haruspex replied to the thread Help on reflection of a wave from fixed end without transmission.That’s not what it says in post #1. It says that is the formula that he had been taught to use, but the answer provided to the question...
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haruspex replied to the thread Help on reflection of a wave from fixed end without transmission.I assume the fixed end is at x=0. That means that the sum of the waves should be always zero there. Official answer : 2 sin(4x-8t) -2...
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haruspex replied to the thread Vertical Circular motion- A confusing question.It's a string, not a rigid rod. @palaphys, will it go higher than the top of the string? What forces will act on it then?
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haruspex replied to the thread Specific heat capacity and latent heat.Create an unknown for the final temperature. Using that write expressions for: - the total heat needs to be extracted from the ice...
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haruspex replied to the thread Calculate the radius of gyration for a plane figure.That’s dimensionality wrong. Is it a typo? Yes, but it is ok to use standard results too. In this problem you have a nonstandard 2D...
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haruspex replied to the thread Calculate the radius of gyration for a plane figure.I have corrected your LaTeX symbols from "/" to "\". Presumably you meant ## \delta x \times y \times (\frac{y^2}{3})## What is the...
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haruspex replied to the thread Calculating acceleration of a prism and block connected to a wall through a rope and pulley.Which way are you taking as positive for a? As I asked in post #2, what is keeping the rope from straightening?
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haruspex replied to the thread Calculating acceleration of a prism and block connected to a wall through a rope and pulley.Which way are you taking as positive for a? As I asked in post #2, what is keeping the rope from straightening?