Hey, nice to hear from you again.
This does make a lot of sense. I guess because it’s moving I felt like it wasn’t fighting anything, but like you said: there is still a resistance from whatever is attached to that belt; regardless of if it’s moving or not. Not sure why I didn’t see that…..
So...
Thanks for the response.
I’m not really seeing how that’s possible. The 5 HP is the power from the motor. The belt isn’t spinning the shaft.
And even so, like I said, I do see that there is a shear stress developed in the shaft due to the belt tension, but how is that torsional shear? The...
Summary:: Torsional stress on freely spinning shaft?
Hey guys,
I’m having some confusion with a certain section of the “Torsion” chapter in my mechanics of materials book: “power transmission”.
Please see the problem below. This is very easy to SOLVE (basically plug and chug with the...
Ok see that’s what I was wondering as well….the reason I left the bottom hole dimensions off is because the geometry is symmetrical around both holes (meaning that the basic dimensions locating the top hole are exactly the same as the bottom)….so I still need to add those dimensions to the...
I have a 2 hole pattern that I’d like to control individually (meaning I don’t want them to move as a unit….I want the tolerance to be applied separately for each hole position). However, they are the same DIA, so can I just do something like this (see below)? Like, by leaving out the distance...
I was watching a YT video getting prepared for class this coming semester, and in the video, this diagram of a manometer was drawn (see image at end of message). The professor stated that the pressure in the tank (Pt) is = to the pressure at point A. Following this, he said that technically...
Thank you. You help me out a lot with questions on here. I appreciate it.
Let me ask you this: so if you look at the FBD I drew on the red pad where I made my cut through section A along the x axis…..if I made the shear/moment diagram with that, and then made another FBD but this time, I had...
Part of a project I am working on (part #3…see description below) is asking us to find the internal loads (shear and moment) and draw the corresponding shear/moment diagrams of the control arm shown below. It’s a little tricky to me, because all of the members associated with these type of...
The second option.
I think you’re asking this to try and get me to realize it’s not just a simple transfer of the weight from the contents in the bucket; it’s being transferred through multiple members/links….. ultimately being supported by the actual machine itself. Like, the weight of the...
Right, I see that: the bucket and the link AB are trying to shear the pin by pushing on it in opposite directions at the ends. But because the pin obviously doesn’t shear, there has to be a pin reaction force on both link AB and the bucket, right? And these two reaction forces are opposite to...
Thank you for your response.
There is a moment about point “D” though, right? Because like, if you were to remove the link AB, that bucket would rotate around “D” in the CCW direction. So the force from the member “AB” is preventing the moment about “D”, but member “AB” still does not...
So, for the link "AB"...they didn't directly list the pin reactions from pin "A" here, but I want to be sure that I understand what those reactions are. So, from what I see in this image, the member is pushing at the pin "A" (red arrow) because otherwise, the bucket would want to rotate...
This is the preceding example given, and this makes 100% sense to me. You add equal and opposite forces to the point you are moving the force to, and you still end up with an equivalent system: a downward force and a clockwise couple moment. So I know I get it….I just don’t know what I’m not...
This isn’t a HW problem per say, but it’s an example shown in my statics textbook that is used to try an explain that you need to add a couple moment to move a force to a point not on the line of action, and I’m just not seeing how the direction of the couple moment is correct. See the image...
So I was watching a YouTube video preparing for a quiz on Wednesday, and I saw something that I would like clarification on. I'm pretty sure I understand what is being explained, but I just want to confirm.
The figure above is associated with the problem at hand. So I understand that to get the...