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**[SOLVED] More Spring oscillation**

## Homework Statement

A 2.20 kg mass is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 17.6 N is required to hold the mass at rest when it is pulled 0.200 m from its equilibrium position (the origin of the x axis). The mass is now released from rest with an initial displacement of xi = 0.200 m, and it subsequently undergoes simple harmonic oscillations. Calculate the maximum speed of the mass.

I've calculated the following already:

Spring constant is 88.0 N/m

Oscillation frequency is 1.00 Hz

## Homework Equations

This is pretty much the problem; i dont know what equation to use to get the max velocity

## The Attempt at a Solution

Ive been messing around with V = -AwSin(wt) but i cant fathom how to get amplitude..