Lnewqban's latest activity
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Lnewqban reacted to pawer's post in the thread How Do I Draw This Shear and Moment Diagram? with
Like.
It was my mistake, sorry. It should be 60 kN. -
Lnewqban replied to the thread Vertical Circular motion- A confusing question.It seems to me that you have incorrectly assumed that the kinetic energy of the small heavy bob at the bottom of the vertical circle is...
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Lnewqban replied to the thread How Do I Draw This Shear and Moment Diagram?.Welcome! But if the only point of anchorage of the beam to the ground is exerting 450 kN of vertical force to keep that equilibrium...
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Lnewqban reacted to A.T.'s post in the thread Problem with pulleys - two fixed and one movable with Like.
I think I misunderstood this part. You simply say that in the rest frame of the axis of a pulley, both rope segments at that pulley have...
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Lnewqban reacted to kuruman's post in the thread Problem with pulleys - two fixed and one movable with Like.
Same as what? Referring to post #5, the "fixed string length constraint" is $$\ddot x_1+2\ddot X+\ddot x_2=0.$$ In the special case...
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Lnewqban replied to the thread Problem with pulleys - two fixed and one movable.Thank you, @kuruman
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Lnewqban reacted to kuruman's post in the thread Problem with pulleys - two fixed and one movable with Like.
That's what it reads because the OP does not realize that the diagram illustrates the special case of equal masses. The OP assumes that...
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Lnewqban replied to the thread Problem with pulleys - two fixed and one movable.Understood, but it seems not to be a special case because it reads "The diagram of the problem is shown to the right." The OP may...
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Lnewqban replied to the thread Problem with pulleys - two fixed and one movable.Aren't the relative accelerations given in the OP's diagram? I see 2a for m1 and m2, as a for M.
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Lnewqban reacted to tellmesomething's post in the thread B Why Does a Spring Return to Its Original Position After Being Stretched? with Like.
this was possibly the dumbest question i asked on here, at that time i had just started learning physics and had very wrong...
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Lnewqban reacted to Steve4Physics's post in the thread Reconcile poundforce w/slug and lbmass with Like.
That is wrong. The above equation (which I'll call equation A) doesn't follow from the other equations. Consider your (correct)...
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Lnewqban reacted to DaveC426913's post in the thread Wood/Glass/Metal DIY lifting concrete blocks with a lever and a grabber with Like.
I went with the stake-and-shim. The shim is steel, with a 90 degree bend, so I can pound it in with the fulcrum hammer. It does...
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Ok. Suppose the top vertical scale was directly connected to the rigid (but massless) pulleys and frame like this:
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Lnewqban replied to the thread B Simple mass/scale puzzle.Strain on a section under tension that finally yields, is acting on both axial directions, increasing the length, and trying to separate...
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Refer to the original diagram in post #1. Fact: The hanging mass on the left is and remains at rest. This means that the tension in the...