FORCES
CONTACT
NONCONTACT
BALANCED
GRAVITY
FRICTION
ELECTRICITY
MAGNETISM
ELECTROMAGNETIC
PUSH
PULL
T
Y
T
A
A
U
S
G
I
O
E
A
U
B
I
I
V
G
N
V
F
A
R
N
D
L
X
A
A
I
Y
U
A
O
B
G
X
A
I
E
E
A
K
L
R
A
F
O
R
C
E
S
V
K
Z
C
A
Z
A
R
Z
E
L
E
C
T
R
I
C
I
T
Y
C
N
E
M
E
B
C
R
V
L
T
R
T
R
K
J
C
S
Y
A
U
L
O
C
W
Y
C
I
O
I
V
E
H
J
K
G
P
K
N
E
A
C
P
M
S
U
D
H
C
J
I
N
M
O
T
Q
C
H
A
Z
V
S
G
I
D
M
O
E
N
G
A
B
O
G
K
U
U
T
C
O
T
H
O
T
P
R
C
Q
N
P
U
D
E
A
D
I
C
Z
P
I
S
R
T
E
K
U
O
O
V
O
N
N
M
O
I
S
S
X
T
S
I
L
U
Q
O
Z
N
J
A
V
Y
M
E
I
G
U
O
L
N
A
O
Q
X
T
I
F
R
I
C
T
I
O
N
