Numerical Solutions To Differential Equations

[rayakannu]

Can someone help me with a mathcad 3.0 numerical solution for the problem attached. I need to be able to write a loop to compute the displacements, velocity, and accelerations at each time step, and then plot these graphs vs time.

thanks

[Werner_E]

Maybe so:

[rayakannu]

Werner, thank you the reply. But, i was expecting a "for" and "if" loop statements using equations 2b, 3a & 3b. i am familiar with the odesolve within the mathcad.

[Werner_E]

Something like this, I guess:

Have changed Delta_t to get a  better resolution and accuracy:

Regards

Werner

[rayakannu]

Yes, that's perfect!

Thanks

[Fred_Kohlhepp]

okay, the hard way

[rayakannu]

Fred, thank you very much. That was very helpful

[rayakannu]

Fred or anyone, can you please help me with this numerical solution? I pretty much followed Fred's procedure, but am getting an error message.

Thanks

[Werner_E]

You use "F" in two different senses in your program - function and matrix. Use a different name for the matrix elements and it works.

WE

[rayakannu]

I am still running into an error. Please help.

Thanks

[Werner_E · Accepted solution]

Your function F() must return a value for negative arguments, too. thats what the error message is telling you.

And in my opinion you should add an = to either of the 0,14 limits

and I guess this should do the job as well

WE

[rayakannu]

Werner,that worked. Thank you.