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π = ___ degrees
180
ω:
angular speed. Similar to velocity
ω =
Δθ/Δt
V
t
=
rω
(tangential speed)
P:
Period. Time it takes to complete one revolution.
f:
Frequency. How many revolutions per second
Formula for frequency:
f=1/T
α:
angular acceleration
Formula for angular acceleration
α=Δω/Δt
A
c
:
centripetal acceleration. Moves towards center of circle.
Law of gravitation
Fg=Gm
1
m
2
/r
2
r
: disance between m
1
and m
2
G=6.67 x 10
-11
F
c
:
Centripetal Force. Net force pointing towards center
Formula for Centripetal Force:
F
c
=ma
c
F
c
=mv
2
/r
Formula for Torque
τ = r
⊥
F = rFsinθ
Torque is positive if
counterclockwise
Torque is negative if
clockwise
Translational Motion
normal velocity
Rotational Motion
angular velocity
Newton's 2nd Law: Rotational Form
Στ=Iα
Rotational Kinetic Energy
K
r
=1/2Iω
2
Translational Kinetic Energy
K
t
=1/2mv
2
Conservation of Angular Momentum
I
o
ω
o
=Iω
θ units
radians
ω units
rad/s
α units
rad/s
2
Author
andreabyerly
ID
46840
Card Set
Physics
Description
Physics- Circular Movement
Updated
2010-11-02T23:21:33Z
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