Ch 06 Work and Kinetic Energy

Learning Objectives

1. Be able to identify and quantitatively model closed mechanical energy systems (where mechanical energy is conserved or no external work is done).
2. Be able to quantify work as the transfer of energy to/from a mechanical energy system, due to a (constant/non-constant) force acting over a displacement.
3. Be able to identify and quantitatively model open mechanical energy systems (where mechanical energy is not "conserved" or work is done by external forces). Also be able to distinguish between conservative and non-conservative (lossy) forces.
4. Understand how power quantifies the time rate of energy transfer or change, and model time-dependent processes.
5. Understand the intergral/differential relations between conservative forces and potential energies, and how conservative forces and energy conservation can be read off of a potential energy versus position graph (energy diagram).
6. Model the behavior of mass-spring systems with energy diagrams (potential energy versus position graphs).
7. Model the behavior of masses in gravitational wells with energy diagrams (potential energy versus position graphs).

Reading: Ch.06 (All sections), Ch. 07 (All sections)
HW: Ch.06
8, 14, 19, 24, 28, 31, 36, 43, 50, 62, 68, 70, 71
Ch. 07
Discussion Questions: 8, 18, 22
2, 9, 31, 32, 33, 34, 35, 37, 39, 40, 41, 42, 55, 69