00:01
Let's first draw the free body diagram for m1 like this.
00:06
X1 fk1 fb2 fb1 fk.
00:20
So finding the equation from this free body diagram and taking laplace we will get the first equation.
01:02
Similarly, we can next draw the free body diagram for m3.
01:06
So on drawing the same pattern for the free body diagram of m3 like this fb1 fk1.
01:20
This is x3 and this side fb1.
01:26
So here same pattern if you are taking the equation finding the laplace we will get the third equation.
01:32
Second equation which will be minus of sb1 minus k1 minus sb3 minus m3 s square whole equal to 0.
01:59
This is our equation number 2.
02:03
Got it? similarly, we can draw the free body diagram for m3.
02:08
Sorry m2 we already got for m3.
02:10
Now let's draw for m2 and we will get f of s is equal to taking the laplace we will get f of s is equal to x2 k2 dash x2 into here it will be k3 dash plus x3 into minus k3 plus sb...