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PTC Mathcad Blog

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Mathcad and train in tunnel from NYC to Frisco

 

Abstract: This paper somewhat humorously shows a physical model of the semi-fantastic idea of an underground tunnel that would connect the two cities, which would be traveled through by the so called gravity train. The idea has existed since Robert Hook first presented it to Sir Isaac Newton. This problem is described by the system of ordinary differential equations. The solution of equation system is obtained numerically using Mathcad applications (with units) and function Odesolve.

 

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  • Physics
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It is the site of the article

V. Ochkov, F. Kolhepp

ART, PHYSICS AND INFORMATICS: CENTER GRAVITY OF THE BLACK BOX

Annotation

The article proposes a laboratory work at the intersection of physics and computer science: the definition of the center of gravity of a plane arbitrary figure, as well as a physical body of an arbitrary shape.

Keywords: flat homogeneous figure, a homogeneous body, the center of gravity, center of mass, the scan pattern, random number generation, matrix, Mathcad.

Pictures:

 

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  • Physics
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Hi All – I want to announce a critical bug fix release of PTC Mathcad Prime 4.0. We recently discovered an issue where some password protected areas can become corrupted on save/open. This is an issue we feel important enough to fix in a maintenance release. We’ve investigated the issue, submitted and tested a fix and will be releasing PTC Mathcad Prime 4.0 M010 later today. Anyone using Prime 4.0 F000 should upgrade to Prime 4.0 M010 – we’ll be removing Prime 4.0 F000 from download to make sure only the fixed version is available.

 

We do our best to avoid situations like this but sometimes bugs happen and when they do, we assess them to understand the impact on users. If they’re critical issues, such as this one, we do our best to fix them as soon as possible.

 

Many thanks,

 

Andy.

  • Other
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The power of Mathcad in solving complicated design problems is very well known. This worksheet will show the design of a coaxial gapped core fed from a central straight conductor. The primary current is 500 A. and the power transferred is 50 KW. This can be used to charge battery Read more...

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Online Mathcad Prime 4.0 help center available here: PTC Mathcad Help Read more...

  • Help Documentation
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How to identify the Max Value in Table automatically? Read more...

  • Data
  • Solvers
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A mass point  M1 runs, without friction along an horizontal axis parallel to the  x one, drawn towards the point Q on its axis, by a spring of elastic constant K. On the other side, A is connected to a thread of negligible weight which, after being passed into the throat of a pulley, Read more...

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Hi all, I have forgotten the password for the locked areas of above and about 15 more files created about 6 years ago in Mathcad 13-14. I have attached the file in Mathcad 11 as suggested in some discussions. please help me find the password. Regards, Mukesh (sonimukeshg@gmail.com) Read more...

  • Data
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Haw can solve system of differential equations with parameter by use Given-Odesolve? Read more...

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How can employ Given-Find inside the programming block? Read more...

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Can anyone help me with the simple loop programming? Read more...

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The process of itteration of numbers by a computer can show that chaos begins to occur when the itteration equation is driven hard enough by increasing input numbers. This is shown by the Logistic Difference Equation. It is suggested that this is a real physical demonstration in a Read more...

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A demonstration of the Logistic Difference Equation and how it may have quantum connected features in its output that can be displayed in the macroscopic realm. Read more...

  • Plots
  • Programming
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I am new to PTC / Mathcad V15.0 but am trying to use this great tool effeciently.  For my job I have solved a problem which involves 8 equations and 8 unknowns.  I have successfully arranged my equations to arrive at the correct solve block answers using the command Find as shown Read more...

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I'm trying to use Mathcad to solve a series of equations. I keep getting the error message "This variable is undefined" Any tips? Read more...

  • Functions
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HiAttached is an mcdx file. I have an issue with the units. I'm expecting the units for fctm to be in MPa. But Mathcad does not seem to be in agreement. If I remove the 2/3 from the equation then the units are OK. Kindly help.Sriprakash Read more...

  • Units
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Recently, we announced the availability of PTC Mathcad Prime 4.0. It’s the next step in the evolution of your favorite engineering notebook, with even more tools for precise calculations and straightforward documentation.Join us for a live webcast with Luke Westbrook, PTC Mathcad Read more...

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Hello sir,I have a big issue with the attached mathcad file, I tried to open it several times but as soon as it open it closes againPlease if some one could help me to open this important fileI appreciate your assistance Read more...

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An old topic, but still. Mathcad and Mathcad Prime skill assessments: https://proficiency.ptc.com/Mathcad 15.0 Basic - This set of questions tests your proficiency in using the basic Mathcad 15.0 functionality: https://proficiency.ptc.com/?c=209Mathcad 15.0 Advanced - This set Read more...

  • Help Documentation
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Republication of a file of the past. the person concerned will enjoy reading. Read more...