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**simple harmonic motion !!!!!!!!!!!!!**

## Homework Statement

An ideal spring has a spring constant k=25N/M and is suspended vertically. A 1kg object is attatched to the unstrechted spring and released. It then performs ocillations.

What is the magnitude of the acceleration of the body when the extension of the spring is at maximum?

What is the maximum extension of the spring?

## Homework Equations

x=Asin(wt)

v=Awcos(wt)=0

a=-Aw

^{2}sin(wt)

F=-kx-mg=ma.... im not sure why kx and mg are in the same direction on this....

a=-(w

^{2})x

## The Attempt at a Solution

im totally confused how to even start with this problem at this point.Can i use the fact that the force of a spring on a mass =-kx=ma or would that be incorrect would i need to use F=ma=-kx-mg? if i use the second one it really doesnt get me anywheres since i dont have much information to begin with..
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