This applet shows how to calculate work when force is not constant. If force is constant, then work can be calculated by [math]W=Fd[/math]. However, if force is not constant, then we need to use calculus.

This applet shows how to calculate work when force is not constant. If force is constant, then work can be calculated by [math]W=Fd[/math]. However, if force is not constant, then we need to use calculus.