haruspex's latest activity
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haruspex replied to the thread Angular Momentum- Conserved or not?.I assume you meant "if all angular momentum…". We can take it that the vertical axle is constrained to be vertical, so we cannot assume... -
haruspex replied to the thread Irodov- 1.123- Simple conceptual question with two masses connected by a spring.In reality, not only are all ropes somewhat elastic, so are all blocks and all ropes have mass. Starting with such a completely general...
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haruspex replied to the thread Irodov- 1.123- Simple conceptual question with two masses connected by a spring.Because to move the other block the tension has to exceed ##\mu m_2g##. If the peak tension exceeds it the block will move and if it...
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haruspex replied to the thread Irodov- 1.123- Simple conceptual question with two masses connected by a spring.To move the other block, just, you need the point where the spring is at max tension. Since the other forces on m1 are constant (as...
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haruspex replied to the thread Irodov- 1.123- Simple conceptual question with two masses connected by a spring.You can certainly reason that it is not speeding up, but there's no obvious reason it is not slowing down. Really? I would have...
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haruspex replied to the thread Help on reflection of a wave from fixed end without transmission.Yes it is. The given wave is y=2 sin(4x-8t). The quoted procedure is "the reflection of the wave y=A sin(wt-Kx) is y=-Asin(wt+Kx) … is...
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haruspex replied to the thread Help on reflection of a wave from fixed end without transmission.You omitted this step: "changing the sign of -Kx to +Kx to indicate change in direction (A sin(wt+Kx))" It's a bit confusing because...
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haruspex replied to the thread Help on reflection of a wave from fixed end without transmission.No, you seem to have x and y confused. x is a position along the string and y is its local displacement at position x and time t. The...
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haruspex replied to the thread Vertical Circular motion- A confusing question.No, of course I am not saying that. In post #20 I was merely addressing the question quoted there. If a textbook states ##\sqrt{4gl}##...
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haruspex replied to the thread Vertical Circular motion- A confusing question.It’s a conditional statement. ##\neg p\implies(p\implies q)##. As in, if pigs could fly, perhaps.
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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...
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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"