PHYS201 Study Guide - Midterm Guide: Conservative Force, Elastic Collision, Rotational Energy
Document Summary
The work it does is stored in the form of energy that can be released at a later time. Work done cannot be recovered later as kinetic energy; instead, it is converted to other forms of energy. A force that does zero total work on any closed path. Work done by friction on a closed path is not zero. Work done by gravity on a closed path is zero: =(cid:1832) (cid:1856) =(cid:1832)(cid:1856)(cid:1855)(cid:1867)(cid:1871, =(cid:1832) (cid:1856) =(cid:1832)(cid:1856)(cid:1855)(cid:1867)(cid:1871) The force is conservative if the work done by a force in going from an arbitrary point a to an arbitrary point b is independent of the path from a to b. Energy is the capacity of a physical system to perform work. Energy is a property of objects transferable among them via interaction. Potential energy is defined as stored energy due to position, shape, or state. In its stored state, energy has the potential for doing work.