Top new questions this week:
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I’m struggling to form a block diagram from a set of equations. \begin{equation} X(s) = -A X(s) + Z(s) +B W(s)\end{equation} \begin{equation}W(s)= C X(s) -D W(s)\end{equation} \begin{equation} Y(s)=…
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If you over-correct your power factor, that is your power factor is leading, not lagging as expected by the utility, can you damage your (as opposed to the utility’s) equipment? As we are all aware, …
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We have a claw machine that grabs a bunch ping pong balls that then drops them onto an incline that leads them to a 2 inch in diameter pvc pipe that they must all fall through. The issue is that when …
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Greatest hits from previous weeks:
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Could anyone please explain what is the difference between active and passive earth pressure when we talk about weight retaining walls. Both are lateral pressure exerted by the soil on a retaining …
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I want to affix a cantilever to wall. I will support the other end of the cantilever with a strut made of wood, that attaches to some point on the wall below the cantilever, as shown in this sketch (…
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When iron is melted, I guess it has to be transported and contained. I think the container in which it is has to be able to withstand higher temperatures than what you want to melt. According to this …
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As I know so far, mortar and grout are mixtures of cement paste and fine aggregates, but both of them play different roles in the construction site. Is it true that grout has more strength compared to …
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I am reading a document about beam end release here: An end release will allow either or both ends of a beam element to rotate about or translate along one or more of the local axes of the beam….
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I’ve seen it in several data sheets – it is a measure of error of some kind, of course. The problem is I dont know the exact meaning. I’ve seen it in the context of repeatability, accuracy and …
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I have a pump that I want to use to pump a solvent. It is hard black plastic so I’m pretty confident it is either ABS or polypropylene (it wasn’t expensive enough to be some more exotic plastic). My …
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