Lnewqban's latest activity
-
https://en.wikipedia.org/wiki/Statically_indeterminate -
Lnewqban reacted to jrmichler's post in the thread Soft/Stable Movement for Parallelogram Mount with Wheel + Printhead with
Like.
Search dashpots in McMaster-Carr. Dashpots are designed to slow something down for a soft landing. You will need some sort of bracket... -
A 17' span is pretty big too. This sounds to me like something that's illegal to do without a licensed structural engineer. So I'm...
-
This problem is two parts. The first is to determine what effects are being provided by each of the elements - 1) the window panes; 2)...
-
Thank you all very much for your attention and assistance in answering my questions.
-
Lnewqban replied to the thread I 1:1 versus 2:1 Mechanical Advantage debate.I respectfully disagree. What we have in this case is a balanced mass hanging from two ropes, in successive steps. The only function of...
-
I do want to know the tensile force exerted on the rope when the outer cylinder descends; F can be considered as the tensile force of...
-
Lnewqban replied to the thread I 1:1 versus 2:1 Mechanical Advantage debate.Welcome, @cmars ! Perhaps it is not completely correct to call it mechanical advantage. The fixed pulley, which is the only device in...
-
I agree that is confusing, but since the question asks for a tension there was, presumably, some mention of a rope in the original text...
-
Lnewqban reacted to jedishrfu's post in the thread I 1:1 versus 2:1 Mechanical Advantage debate with Like.
Your self-haul with a single fixed pulley has a 2:1 MA in the ideal case: half the force, twice the rope. The confusion clears the...
-
Lnewqban replied to the thread Physics Problem on Tension in Water.Isn't the force vector represented in the OP diagram pointing in the wrong direction? The outer cylinder would naturally tend to fall...
-
Lnewqban reacted to berkeman's post in the thread Lawn/Garden Determining Ramp Length for Ground Clearance with Like.
In case you decide to make it/them on your own, I'll share my old design. I built a very strong motorcycle ramp (strong enough for...
-
Lnewqban reacted to kuruman's post in the thread Tension in a string connecting two blocks having equal and opposite velocities with Like.
The real problem with wording is in the statement of the question. The masses cannot be unequal and have equal speeds in opposite...
-
Lnewqban reacted to kuruman's post in the thread Tension in a string connecting two blocks having equal and opposite velocities with Like.
It is not necessary to assume that the CoM has some velocity. The two masses orbit each other while the CoM is stationary. This is shown...
-
Lnewqban reacted to kuruman's post in the thread Tension in a string connecting two blocks having equal and opposite velocities with Like.
And what external entity is there to provide the centripetal acceleration to the center of mass? Please look at the figure in post #8.