LIFTING
BALANCE
LEVERS
FORCE
MASS
VICE
LOADARM
GRAVITY
WEIGHTBEAM
NUTCRACKER
LOWERING
MANGONEL
TROLLEY
COUNTERACTED
L
I
F
T
I
N
G
T
G
N
I
R
E
W
O
L
A
B
S
V
E
C
A
E
C
N
A
L
A
B
B
O
H
U
E
N
P
I
S
S
A
M
A
H
M
T
Y
P
J
G
E
J
O
U
U
E
M
A
N
G
O
N
E
L
R
I
G
M
C
U
U
I
A
Q
I
V
B
C
G
D
P
U
U
O
R
I
I
N
E
Y
W
U
J
D
N
N
O
J
I
A
U
O
L
U
V
A
F
W
J
Z
C
B
M
M
O
U
X
N
A
G
K
L
I
L
O
L
I
K
O
H
M
A
A
C
N
U
L
E
N
I
E
O
O
K
C
D
A
N
T
E
D
F
M
T
J
Z
E
C
G
Y
M
U
A
M
A
J
E
B
T
O
C
C
E
G
L
M
R
D
A
C
K
R
J
F
O
T
O
R
J
R
U
R
A
E
A
Z
Y
S
H
A
U
D
D
H
V
C
A
A
K
E
A
H
V
A
A
I
T
D
M
H
P
G
I
E
E
C
O
G
L
C
I
E
I
A
D
A
O
E
A
I
Q
E
J
K
U
G
U
I
T
E
R
E
E
O
I
A
A
E
O
I
O
E
U
I
I
I
Y
E
O
S
U
L
J
O
U
W
J
M
K
R
K
A
E
I
T
W
D
P
D
V
E
B
K
E
F
F
I
G
K
J
U
B
A
U
D
D
U
I
D
V
X
U
I
B
S
E
O
O
U
F
H
M
U
I
