Consider a Crate of Mass 5

Multiple Choice

Consider a crate of mass 5.0 kg resting on the floor. A man pushing along a line making an angle of 15° with the plane of the floor is barely able to overcome the friction (coefficient µ_k = 0.45) and slide the crate with constant speed. The minimum force necessary to produce this motion is

A) 0 N.
B) 23 N.
C) 46 N.
D) infinite.