haruspex's latest activity
-
haruspex replied to the thread Angular Momentum- Conserved or not?.Yes, that seems to be what the problem statement intended, but the OP's attempt (i) did not take it as fixed. -
haruspex replied to the thread Angular Momentum- Conserved or not?.Isn’t that what the OP did in post #1?
-
haruspex replied to the thread Angular Momentum- Conserved or not?.I see the wording issue a little differently. In usual terminology , an "axis" is not a physical object, any more than is a line or...
-
haruspex replied to the thread Angular Momentum- Conserved or not?.As with linear momentum, it can be conserved in one direction but not in another. With only gravity acting, horizontal linear momentum...
-
haruspex replied to the thread Motion in 2 dimensions.Whether a feature can be neglected depends on the purpose of the analysis. If you want to know the direction in the limit then the y...
-
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...
-
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...
-
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...
-
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...
-
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...
-
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...
-
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...
-
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}##...
-
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.