Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
4=√(k/m) / (2π), 3 = √(k/(m+2.5))/(2π)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random