m
1
(
k
g
)
1
m
2
(
k
g
)
1
ℓ
1
(
m
)
1
ℓ
2
(
m
)
1
t
i
m
e
(
s
)
0
m
o
d
e
1
2
v
i
e
w
2
D
3
D