haruspex's latest activity
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haruspex replied to the thread 2 wires attached to another wire attached to a block.So what does that tell you about the net force acting on it? And what forces contribute to that total? -
haruspex replied to the thread 2 wires attached to another wire attached to a block.What forces act on the suspended object? Is the suspended object accelerating? The "relevant equations" item in the template is for...
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haruspex replied to the thread Struggling to understand the concept of this question (ice cube in water optics question).The apparent height of the whole block is the sum of the apparent height of the submerged portion and the apparent height of the exposed...
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haruspex replied to the thread Why can I neglect angular momentum due to precession here?.Thanks for the clarification.
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haruspex replied to the thread Why can I neglect angular momentum due to precession here?.I've stayed out of this thread because I have trouble deciphering the meaning of some parts… whom? their? I have no idea what is...
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haruspex replied to the thread Struggling to understand the concept of this question (ice cube in water optics question).I still fail to see how it could appear to be less than the true height when viewed from the denser medium.
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haruspex replied to the thread Struggling to understand the concept of this question (ice cube in water optics question).Wouldn’t that make the height seem greater?
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haruspex replied to the thread Understanding Forces and their Vector Components.First, choose your axes. You don't have to have x as horizontal and y as vertical. Sometimes it makes the algebra easier if you...
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haruspex replied to the thread Variable mass system : water sprayed into a moving container.My approach was: When the cart has moved s from the cannon, how much water has the cannon ejected? How much of that has reached the...
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haruspex replied to the thread I've come across another fluid pressure problem I don't understand.Then you drew the triangle representing the valve the wrong way up.
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haruspex replied to the thread I've come across another fluid pressure problem I don't understand.I do not understand the function of the check valve here. It is drawn as though allowing flow upwards, which means admitting air if the...
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haruspex replied to the thread What Determines the Minimum Mass of a Block in a Collision Scenario?.In your fifth equation, the one ending …16-1)=0, check where that -1 comes from. It should be something else. Also, having obtained a...
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haruspex replied to the thread Spherical capacitor RC system -- determine steady state charges.I repeat: And your working, of course.
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haruspex replied to the thread Acceleration of a wedge: What forces act on the wedge?.No. You have confused yourself by drawing the forces on the wedge and the block in the same diagram. Draw two separate FBDs.
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haruspex replied to the thread Acceleration of a wedge: What forces act on the wedge?.The simplest way to think of it is to include the portion of the rope in contact with the pulley as being part of the wedge+pulley...