Community Digest |
Top new questions this week: |
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Static analysis of a four-bar linkageI have a four-bar linkage of known geometry (all angles, lengths, etc.) and I'm trying to solve for the required force to balance an input force. Per this diagram, the input force (Fc, perpendicular ...
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Assuming sufficient electrical power, is an electrolysed oxyhydrogen rocket practical?Assume we have access to light electrical power e.g. a (hypothetical) small fusion reactor. Is it practical to operate a water-fuelled rocket, in which water is converted to hydrogen and oxygen (or ...
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How to calculate required force needed to compress paper waste for a waste baler?I just wish to understand an approach to designing the necessary amount of compression force needed for a waste baler
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Which language is used to program a PLC?I want to learn the PLC and its programming, please let me know which language should be used?
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Greatest hits from previous weeks: |
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Choosing of repeating variables in Buckingham's Pi theoremWhat are the criteria for choosing repeating variables in Buckingham's Pi theorem in dimensional analysis? In many problems, it's solved by taking D,V,H (Diameter, Velocity, Height) as repeating ...
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How can I calculate the force required to bend a 10 mm thick plate in a rolling machine?We have a rolling machine with 3 rollers; the bottom has two rollers with diameters of 168 mm and one top roller with a diameter of 219 mm. I want to calculate the required force to bend a 10 mm ...
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Derivation of the equation of the work done in a polytropic processI am completing a question that is requiring calculation of the work done in a polytropic process. In the worked solutions the work equation seems to be reversed for the answer, as can be seen in the ...
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The differences between manipulated variables and control variablesIn control theory, are manipulated variables and control variables the same concept or is there a subtle difference between them?
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Why are most standard bolt threads single start?When looking at thread descriptions, one of the basic properties is always the number of thread starts. As far as I could tell, all of the major standard bolt threads are single-start. This includes: ...
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Calculation of Clamping force from bolt torqueI'm trying to calculate the clamping force resulting from torquing a nut and bolt to a particular level. I have found this formula in various forms in a lot of places. $$T = KDP$$ $T$ = Torque (in-...
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How to reverse the direction of rotational movement on the same axis?I want to make a "gearbox" that will transform input rotational movement to an output rotational movement with the same speed but in the different direction (clockwise / counterclockwise) on the same ...
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