Forced Mass on Spring: Amplitude of Vibration Calculation

[hattonphilip]

Homework Statement

A mass of 2kg is hung on a spring of spring constant 3.92 x 103 Nm-1. The natural frequency for the system is wo = 44.3 s-1. The system is forced to vibrate by an alternating force of amplitude
F = 2 cos (wt) Newtons.
What is the amplitude of vibration when w = 20 s-1

Homework Equations

The Attempt at a Solution

 

[radou]

You should find this link useful in order to gather up some relevant equations and show an attempt to solve the problem: http://ltcconline.net/greenl/courses/204/appsHigherOrder/forcedVibrations.htm"

 

[hattonphilip]

thankyou very much, i have been searching for ages to find a page as useful as that

 

[OlderDan]

thankyou very much, i have been searching for ages to find a page as useful as that

This one looks pretty good too

http://www.scar.utoronto.ca/~pat/fun/NEWT1D/PDF/OSCDAMP.PDF