Download Spring Force

Force
Magnitude
Tension
Elastic Force
Gravity
Normal Force
Friction
Drag
1
Force
Magnitude
Tension
T
The magnitude of the tension is the same
everywhere in the rope.
T
2
Force
Magnitude
Name of Force
Symbol
3
Tension

T
When does this
force occur?
If an object that is experiencing the force is pulling
but not stretching another object
Where does this
force occur?
On the object that is experiencing the force at the
point where the pulling occurs
Magnitude
Determined using Newton’s Second Law
Associated Energy
No associated energy
Force
Magnitude
Spring Force
k
x
Fsp
4
Force
Magnitude
Name of Force
Symbol

Fspring
When does this
force occur?
If an object that is experiencing the force is
stretching (or compressing) another object
Where does this
force occur?
On the object experiencing the force where it
connects to the object that stretches/compresses
Magnitude
Associated Energy
5
Spring Force
kx
Elastic Potential Energy
Force
Magnitude
Gravity
m1
FG
m2
r
FG
6
Force
Magnitude
Gravity
Name of Force
FG
Symbol
When does this
force occur?
If there are two massive objects present
Where does this
force occur?
At the center-of-mass of the object receiving the
force
Magnitude
Associated Energy
7
or

w
mm
G 1 2 2 or mg
r
G  6.67 10
11
Nm2
kg 2
Gravitational Potential Energy
g  9.81
m
s2
Force
Magnitude
Gravity (near the earth’s surface)
m
w   mg ˆj
6x1024 kg
6.375x106 m
Mass of the earth
Radius of the earth
2

11 Nm 
24
 6.67 10

5
.
99

10
mm
2 
kg 
GM e m 
m

F


9
.
81
m  mg

2
2
2 
6
s 
Re

6.38 10 m


8


Force
Magnitude
Normal Force
N
w
9
Force
Magnitude
Name of Force
Symbol
10
Normal Force
 
n, FN
or

N
When does this
force occur?
If an object touches the surface of another object
Where does this
force occur?
On the object receiving the force at the point(s)
where it touches the surface
Magnitude
Determined using Newton’s Second Law
Associated Energy
No associated energy
Force
Magnitude
Friction
N
f
11
Force
Magnitude
Name of Force
Symbol

fs
or

fk
When does this
force occur?
If an object touches the surface of another object
Where does this
force occur?
On the object receiving the force at the point(s)
where it touches the surface
Magnitude
Associated Energy
12
Friction
 s N
or
k N
Thermal Energy
Force
Magnitude
Drag
D
13
Force
Magnitude
Drag
Name of Force

D
Symbol
When does this
force occur?
If an object is moving through a liquid or gas.
Where does this
force occur?
On the object receiving the force at the point(s)
where it touches the liquid or gas
Magnitude
Associated Energy
14

4 m
1
2
/ kg

Av 2
Thermal Energy