A Push of Magnitude P Acts on a Box

Multiple Choice

A push of magnitude P acts on a box of weight W as shown in the figure. The push is directed at an angle $\theta$ below the horizontal, and the box remains a rest. The box rests on a horizontal surface that has some friction with the box. The friction force on the box due to the floor is equal to

A) $P \cos \theta + W$
B) $P \cos \theta$
C) 0
D) $P \sin \theta$
E) P+W