Lecture05

Lecture05 - Chapter 8 Potential energy and conservation of energy PHYS 2101 P.M.Shikhaliev LSU Fall 2010 1 8.1 Potential energy Potential energy is

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 8 Potential energy and conservation of energy 1 PHYS 2101, P.M.Shikhaliev LSU, Fall 2010
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8.1. Potential energy Potential energy is energy that can be associated with a system of objects that apply forces on one another. Some forms of potential energy: 1. Gravitational Potential Energy, 2. Elastic Potential Energy 3. Electrostatic Potential Energy 2 PHYS 2101, P.M.Shikhaliev LSU, Fall 2010
Background image of page 2
8.2. Work and potential energy Kinetic energy (Chapter 7): Work is positive – kinetic energy increases Work is negative – kinetic energy decreases Potential energy (Chapter 8): Since U + K = const. then Work is positive – potential energy decreases Work is negative – potential energy increases D U = – W 3 PHYS 2101, P.M.Shikhaliev LSU, Fall 2010
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8.2. Conservative and non-conservative forces If a system includes two or more object that interact with each other through forces, changing their potential and kinetic energies, and condition U + K = const. holds, then the forces between these objects are called conservative forces. If the condition U + K = const. does not hold, then some non-conservative forces apply to one or more object. Example: Gravitational force and spring force are conservative forces Friction and drag forces are not conservative forces 4 PHYS 2101, P.M.Shikhaliev LSU, Fall 2010 Friction present (non-conservative force)
Background image of page 4
8.3. Path Independence of Conservative Forces
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/30/2010 for the course PHYS 2101 taught by Professor Grouptest during the Spring '07 term at LSU.

Page1 / 16

Lecture05 - Chapter 8 Potential energy and conservation of energy PHYS 2101 P.M.Shikhaliev LSU Fall 2010 1 8.1 Potential energy Potential energy is

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online