Evaluate
initial
angle
rod
1
,
θ
1
0
initial
angle
rod
2
,
θ
2
0
mass
1
,
m
1
1
mass
2
,
m
2
1
rod
length
1
,
l
1
5
rod
length
2
,
l
2
5
spring
stiffness
k
1
release
system
2
4
6
8
10
-
1
.
5
-
1
.
0
-
0
.
5
0
.
0
0
.
5
1
.
0
1
.
5
