- #1
temaire
- 279
- 0
Homework Statement
If a box is pushed along a level surface, what could be said if the coefficient of fricion([tex]\mu[/tex]) increases?
a) Final kinetic energy increases and heat energy increases
b) Final kinetic energy increases and heat energy decreases
c) Final kinetic energy decrease and heat energy increases
d) Final kinetic energy decreases and heat energy decreases
Homework Equations
[tex]E_k = \frac{mv_2} {2}[/tex]
[tex]F_F = \mu F_N[/tex]
[tex]W = Fd[/tex]
The Attempt at a Solution
I think that the answer is a), because if the coefficient of friction increases, the force of friction increases, which means that more work would be needed to overcome this friction. Therefore, kinetic energy will increase since it is equivalent to work. Also, heat energy increases because if the force of friction increases it is general knowledge that more heat will be produced. Am I right?