1. Jun 16, 2010

### flynostrich08

1. The problem statement, all variables and given/known data

If a mass of 0.3 kg is attached to a horizontal spring system with a spring constant of 32 N/m^2 is stretched 0.2 m from its relaxed length, what is the maximum speed the mass will attain when released from this position?

3. The attempt at a solution
i thought all you end up with is Vf=squareroot of k/m(xi^2-xf^2) but it is wrong.

2. Jun 16, 2010

### Staff: Mentor

When the mass is at its maximum speed, what will be the stretch of the spring?

3. Jun 16, 2010

### mo_0820

$$x_i=?\mbox{ and }x_f=?{ },{ }\mbox{how do you think?}$$
$$\mbox{does the statement is complete? frictional force?}$$

Last edited: Jun 16, 2010