Chapter 7 - Learning Outcomes - Page 129: 7.1

The answer is given below.

* When the total work done by a force $\vec F$ acting as an object moves over any closed path (one that ends where it started) is zero. Then we called the force, a conservative force. (gives back energy) * When the total work done by a force F⃗ acting as an object moves over any closed path (one that ends where it started) is positive. Then we called the force, a non conservative force.