I am having a hard time figuring out how to calculate the work done by friction with varying acceleration. I will post the entire problem just for reference, but I know how to do everything EXCEPT how to calculate the work done by non conservative forces, i.e. friction in this case. Here is the problem:
I know the work done by friction is 0.24J, but I don't know how to calculate it.A .250kg glider sits in equilibrium on a horizontal track having a coeffecient of kinetic friction of 0.0800. The glider is connected to a spring with a spring-force constant of 12.0 N/m. You pull on the glider, stretching the spring .2m, and then release the glider from rest. The glider begins to move towards its equilibrium position.
What is the speed of the glider when it has traveled half the distance to its original equilibrium position from the position at which it was released?