but why?
I am confused how these equations are derived.
I have derived the middle mass equation.
But I am unsure about some conventions I have used...
please can you show me... what happens physically?
Okay that makes sense! That is the same conclusion I came up with the 3 masses scenario. Because the two xvalues to the left and the right cause positive "tugs" if you will.
What is the equation in general for the endpoint masses.
Would be in your case -2x(j) +2x(j+1)? for the left? and...
Homework Statement
http://imgur.com/2KIhk
Hi!
If you please look at the image. I have already determined the equations of motion.
They are as follows:
Ma1 = 2kx1+kx2
Ma2 = -2kx2+kx1+kx3
Mx3 = -2x3 +kx2
Now... what I don't understand is how does this physically happen?
If...