# Homework Help: Generalized force and the Lagrangian

1. Dec 3, 2016

### Hiranya Pasan

1. The problem statement, all variables and given/known data
A particle of mass m slides without rolling down on a inclined plane, Find the generalized force and the Lagrangian equation of motion of mass m.

2. Relevant equations
T = (mx'^2)/2
Generalized force Q=-d/dx(V)

3. The attempt at a solution
To find the generalized force first I found the Potential energy and taking the derivative with the x, but my teacher said that the friction force should take into the account therefore I was told using the Work done, find the generalized force. How can I do that?

Last edited: Dec 4, 2016
2. Dec 4, 2016

### Orodruin

Staff Emeritus
Your issues seem to suggest there is more to the problem than what you state. Please post the entire problem statement quoted word by word.

3. Dec 4, 2016

### Hiranya Pasan

Thanks for the response , This is the entire probelm, but the angle of inclined plane can be taken as theta and we can take parameters as necessary

4. Dec 5, 2016

help :(