# Elastic forming a helix

1. Jun 26, 2011

### gabrielbhl

If I have an elastic formin a helix which i've turned N times and have a radiu r... it connect two masse m (one of them is fixed) - the natural lenght of the ropes are X_0 (the distance between the masses)
what are the equation of motion X(t) and (Theta)(t) ??

2. Jun 26, 2011

### gabrielbhl

this masses are cirular of radiu r, that is: I=mr²

3. Jun 27, 2011

### ardie

ur english is really confusing, maybe u want to try drawing a diagram?