DRAW F.B.D

A 16-kg box rests on a horizontal table. 16 kg What force does the table exert on the box? If a rope is tied to the box and runs vertically over a frictionless pulley, and the other end is attached to a free-hanging 12-kg box, what is the force of the table on the 16-kg box? Ignore the masses of the pulley and the rope. c) If the free-hanging 12-kq box is replaced with an 18-kg box, what is the force of the table on the 16-kg box?