# Springs, Pendulums and Centrifical Force

1. Dec 20, 2003

### DarkAnt

Physics is my first class so I'm almost never awake. Could someone please tell me what the variables stand for.

Spring: T= 2 * pi * square root (m/k)
What is T, m, k?

Hooke's Law: F = -Kx
What is K, x?

Pendulums: T = 2 *pi* square root (l/g)
What is T, l, g?

Centrifical Force:
Fc = mac
Fc = (mu^2)/r
Fc = m4*pi^2* rf^2
What is Fc, a, c, m, u, f?

Last edited: Dec 20, 2003
2. Dec 20, 2003

### ShawnD

wow, you really don't pay attention :D

T = period
m = mass
k = spring constant
K = spring constant
x = distance (I always write d instead of x)
T = period
l = length of rope
g = gravity
Fc = centripetal force
a = acceleration
c = nothing, teach probably wrote it as a subscript
m = mass
u = he actually wrote a v, not a u. it's supposed to be $$v^2$$. it means velocity

I don't know what f is though. I would think it means frequency but I can't be certain of that.

3. Dec 20, 2003

### DarkAnt

Thank you!!!

Yea, I really have trouble paying attention first period, I'm not a morning person.

Thanks