# Is this a trick question? more springs

1. Aug 17, 2011

### flyingpig

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

A block with mass m is held against a compressed spring and then the spring is allowed to uncompress giving the block a velocity. The block slides to the right and then up an incline. Find the maximum height that the block reaches if the incline is $$\theta$$ degrees. All surfaces are frictionless, the spring constant is k and the initial spring compression is $$x_0$$.

3. The attempt at a solution

It says it gives the block a certain velocity, but that is after it releases right? So initally it still at rest. Also is the angle really necessary?

So really is it just

$$\frac{1}{2}kx_0 ^2 = mgh$$

2. Aug 17, 2011

### PeterO

You are right about the velocity.
With regard to height, I would agree you don't need the angle if you are considering vertical height gain, which makes me wonder if they are expecting an answer like x metres up the slope, rather than a vertical height gain??