Homework Help: Non-conservaite force and Kinetic Energy

1. Oct 24, 2007

Oliviam12

1. The problem statement, all variables and given/known data
True/False If a non-conservative force acts on an object, its kinetic energy must increase.

2. Relevant equations
?

3. The attempt at a solution
I don't really understand the question, especially the part about a non-conservative force? I thought all forces were conserved, or am I confusing that with something else? However, I think the answer might be True but, the only reasoning behing that is that kinetic energy seems like it would increase over any force...

2. Oct 24, 2007

D H

Staff Emeritus
Forces aren't conserved. Conserved quantities in classical physics include mass, energy, linear momentum, and angular momentum. What does your text say about nonconservative forces? What is a good example of a nonconservative force?

3. Oct 24, 2007

Oliviam12

I don't really have a text yet... I am taking the class online and the online e-text is incompleate and unhelpful (I ordered a recommended book and it should be in within the week.) But, the only mention of nonconservative forces is "The work done by a nonconservative force depends on the path through which the force acts." and I read online that an example of a nonconservative force is friction.

4. Oct 24, 2007

Oliviam12

Never mind, I just happened upon it online. Thanks anyway!