cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Showing results for 
Search instead for 
Did you mean: 

2D Plot Help Required

ssharma-2
4-Participant

2D Plot Help Required

Hi all,

We have certain deferential equations as shown in the attached image:

plot.png

Now we want plot of Tm With respect to Time.

is it possible to achieve this in Mathcad?

Pls Help.

Thanks,

Shashank

1 ACCEPTED SOLUTION

Accepted Solutions

With a second-order equation you need an initial value for the dependent variable and an initial value for the rate of change of the dependent variable. However, the 2nd order equation you have implemented is not consistent with the equations you originally listed!

Alan

View solution in original post

5 REPLIES 5

These equations can be combined to form a linear second-order differential equation with constant coefficients. This can be solved analytically (look up the solution in a standard text-book). You can then construct Tm and plot it. You will need to specify numerical values for theta and dtheta/dt at time zero before you can plot anything though.

Alan

ssharma-2
4-Participant
(To:AlanStevens)

can you please share a mathcad sheet?

Attached is a sheet showing how to solve and plot numerically. (M15 format)

Alan

ssharma-2
4-Participant
(To:AlanStevens)

Thnaks Alan,

But when i am defining it as second order derivative, its giving error, as "Too few initial conditions"

Please suggest.....error.png

With a second-order equation you need an initial value for the dependent variable and an initial value for the rate of change of the dependent variable. However, the 2nd order equation you have implemented is not consistent with the equations you originally listed!

Alan

Announcements
Check out the latest
Mathcad Tip
"PTC Mathcad 15 / Prime 1-6 Update."