A 40-Kg Block Slides Down a 35° Incline at a Constant

Multiple Choice

A 4.0-kg block slides down a 35° incline at a constant speed when a 16-N force is applied acting up and parallel to the incline. What is the coefficient of kinetic friction between the block and the surface of the incline?

A) 0.20
B) 0.23
C) 0.26
D) 0.33
E) 0.41