# Spring system on an incline

1. Feb 26, 2009

### jabbie3

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

A spring is mounted at an angle of 29 degrees on a frictionless incline as illustrated in the figure below. The spring is compressed to 15 cm where it is allowed to propel a mass of 4.6 kg up the incline.

https://chip.physics.purdue.edu/protected/GiordanoMimg/chapter6/06P94.jpg

2. Relevant equations

All I am really aware of is W=1/2kx2

But i do not know where to go from there

3. The attempt at a solution

Idk..i really need some guidance..THANKS!

2. Feb 26, 2009

### jabbie3

Sorry i forgot the questions!

(a) If the spring constant is 560 N/m, how fast is the mass moving when leaves the spring?

(b) To what maximum distance from the starting point will the mass rise up the incline?

3. Feb 27, 2009

### lanedance

loosk like a good one for conservation of energy

at each point teh energy can be in 3 forms

spring potential energy, kinetic energy & gravitation potential energy

should know the formulas for each of these think about where they apply

4. Feb 27, 2009

### jabbie3

i tried that and im not getting the right answer..i figured i would have to find the velocity in x and y before i find THE velocity..but i dont know where to start with that

5. Feb 27, 2009