Engineering software

Hi group, I am looking for engineering software to perform calculations: torque required to accelerate a flywheel, inertia stresses in beams etc.
This is for home use, so cheap (or free) would be nice.
Any suggestions?
Tony
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.