Lnewqban's latest activity
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Lnewqban replied to the thread Correct statement about siphon used to empty water tank.Because molecules of the liquid will be jumping into the gas space as long as they have extra energy to do so. Those jumps will increase... -
Lnewqban replied to the thread Correct statement about a reservoir with an outlet pipe.Not what I wrote. :smile: When the level reaches 10 meters, some pressure value may still exist on top of the water, which should be...
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Lnewqban replied to the thread Problem about units conversion: cm^2 --> m^2.
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Lnewqban replied to the thread Correct statement about siphon used to empty water tank.Because the reasons explained above, statement (i) is only approximately correct. Please, see...
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Lnewqban replied to the thread Engineering Looking for recommendations for reference/textbooks on Flight Dynamics.Please, see: https://www.amazon.com/Illustrated-Guide-Aerodynamics-Hubert-Smith/dp/0830639012/?tag=pfamazon01-20...
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Lnewqban replied to the thread Correct statement about a reservoir with an outlet pipe.As the volume of the liquid contained inside the tank decreases, the air pressure above its surfaces also decreases. "The water will...
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Lnewqban reacted to A.T.'s post in the thread B A scenario of non-uniform circular motion with
Like.
Yeah, I did not understand that part of the question either. Since it's about any deviation from circular it doesn't really matter, but... -
Lnewqban replied to the thread B A scenario of non-uniform circular motion.The centrifugal effect should induce a traction effect on the road. Therefore, increasing the rotational velocity of the object should...
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Lnewqban reacted to demej00's post in the thread Calculate minimum RPM to self-balance a CMG on two legs with Like.
I have not had it at 1500 rpm, I have had it up to 800 rpm and yeah it was jumping around quite a bit even though I had roughly balanced...
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Lnewqban replied to the thread HP Required to move a robot 10meters at 1.5m/sec.Perfectly horizontal movement? Geared rails? How much acceleration you need? How will the mass be stopped?
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Lnewqban replied to the thread Mechanics homework confusion.Welcome! I believe that you can consider a triangle of sides 1.25-2-1.25, assuming that the two strings coincide with the center of mass...
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Lnewqban reacted to haruspex's post in the thread Rolling without slipping on a curved surface with Like.
No, ##\Delta s## is greater than that because of the curved surface. Consider e.g. R only marginally greater than r.
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Lnewqban reacted to haruspex's post in the thread Rolling without slipping on a curved surface with Like.
Ok, here’s what is wrong with the AI solution. First, "the CM acceleration is ##(R-r)\ddot\theta##, not ##a##” is wrong in that it is...
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Lnewqban replied to the thread Calculate minimum RPM to self-balance a CMG on two legs.Welcome! Are you sure about your bicycle tire and wheel being perfectly balanced and able to remain intact at the recommended 1500 rpm...
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Lnewqban reacted to Klystron's post in the thread RIP Jane Goodall (91), primatologist and conservationist with Like.
I have a Jane Goodall anecdote that I think about often during these strange days. While visiting at Stanford University in Palo Alto...
