Block on Spring SHM, Finding angular frequency

[SadDan]

Homework Statement

An "ideal" spring with spring constant 0.45 N/m is attached to a block with mass 0.9 kg on one end and a vertical wall on the other. The floor has negligible friction, and you give the block a push and then let go. You observe that the block undergoes simple harmonic motion with a maximum speed of 2.2 m/s.

What is the angular frequency of the oscillations?

Homework Equations

omega= 2*pi*f
v=2*pi*f*sqrt(A^2-x^2)

The Attempt at a Solution

[/B]f=v/(2*pi*sqrt(A^2-x^2))
angular frequency= 2*pi*(v/(2*pi*sqrt(A^2-x^2))) I don't think I am doing this right because i don't know A or x

 

[gneill]

Hi SadDan. Welcome to Physics Forums.

You need to show an attempt at solution before help can be offered. Show us what you've tried.

 

[gneill]

Have you checked your textbook or class notes for formulas related to simple harmonic motion (SHM) or the mass-spring oscillator? You should find something on the period and frequency of oscillation. Failing that, do a web search; there is an abundance of relevant hits. For example, an excellent site for physics reference is the Hyperphysics site which has an entry for simple harmonic motion.

 

[SadDan]

Thanks for the reference, I found it with the equation w=sqrt(k/m)