In order to slide a 753 N box across the floor at a constant speed, you must push horizontally with a force of magnitude 452 N. What is the coefficient of kinetic friction?
A) 1.66
B) 0.600
C) 0.660
D) 0.580
E) 1.65

Question

Quizplus · Accepted Answer

The coefficient of kinetic friction ($\mu_k$) is calculated using the formula $\mu_k = \frac{F}{N}$, where $F$ is the force of friction (452 N in this case) and $N$ is the normal force, which is equal to the weight of the box (753 N) since the motion is horizontal and there are no vertical forces other than gravity and the normal force. Therefore, $\mu_k = \frac{452}{753} \approx 0.600$.

In Order to Slide a 753 N Box Across the Floor