POTENTIAL ENERGY

POTENTIAL ENERGY - POTENTIAL ENERGY Potential energy is...

This preview shows pages 1–2. Sign up to view the full content.

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: POTENTIAL ENERGY Potential energy is energy that is a function of position only. A potential energy function U(x, y, z) exists only for conservative forces. A conservative force is a force that does the same amount of work on an object when the object undergoes a displacement regardless of the path taken. The work done by a conservative force is path independent. The work done by a conservative force for all closed paths is zero. Conservative forces conserve total mechanical energy. All constant forces are conservative because they do not depend on path or anything else. If a force has a component with explicit time- dependence, then that force is non- conservative. Different paths for the same displacement would involve non- equal time intervals such that the time- dependent force would do varying work for the same change of position. All dissipating forces such as kinetic friction or drag forces are non- conservative because they dissipate mechanical energy. If the force is variable and its x-...
View Full Document

This note was uploaded on 04/29/2010 for the course PHYSICS 195 taught by Professor Goldstein during the Spring '10 term at Mesa CC.

Page1 / 2

POTENTIAL ENERGY - POTENTIAL ENERGY Potential energy is...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online