A 600-Kg Mass Person Wishes to Push a 120-Kg Mass Box

Multiple Choice

A 60.0-kg mass person wishes to push a 120-kg mass box across a level floor. The coefficient of static friction between the person's shoes and the floor is 0.700. What is the maximum coefficient of static friction between the box and the floor such that the person can push horizontally on the box and cause it to start moving?

A) 0.333
B) 0.500
C) 0.350
D) 0.667
E) 0.700