·
friction opposes the motion (loss of
energy : heat)
R =
reaction Force (n) -
> normal Force
W =
weight (v)
F = Force
Friction (N)
* F and R are proportional
F
M = coefficient of friction
>
-
slope
=
M
F =
MR
R
if it static
· is NOT moving it ,
is
-
coefficient of static Friction F = MsR
·
if it is
moving , it is
dynamic friction
-
coefficient of dynamic Friction F =
MiR
example
ri-macoso
T W =
mg
o mysino
-
N macosO =
Fs MsN =
Fs =
mgsin
O
O
mysicO =
Ms Mycos
Ms
Sotan
=
friction opposes the motion (loss of
energy : heat)
R =
reaction Force (n) -
> normal Force
W =
weight (v)
F = Force
Friction (N)
* F and R are proportional
F
M = coefficient of friction
>
-
slope
=
M
F =
MR
R
if it static
· is NOT moving it ,
is
-
coefficient of static Friction F = MsR
·
if it is
moving , it is
dynamic friction
-
coefficient of dynamic Friction F =
MiR
example
ri-macoso
T W =
mg
o mysino
-
N macosO =
Fs MsN =
Fs =
mgsin
O
O
mysicO =
Ms Mycos
Ms
Sotan
=
