Question

The table represents the forces on four objects, with directions.

Object F1 ↑ F2 → F3 ← F4 ↓
W 30 N 20 N 20 N 30 N
X 15 N 35 N 25 N 15 N
Y 60 N 0 N 0 N 60 N
Z 45 N 0 N 22 N 45 N
Which best explains the forces acting on the objects?

Objects W and X have balanced forces, and objects Y and Z have unbalanced forces.
Objects W and Y have balanced forces, and objects X and Z have unbalanced forces.
Objects X and Y have balanced forces, and objects W and Z have unbalanced forces.
Objects X and Z have balanced forces, and objects W and Y have unbalanced forces.

Answer 1

Objects W and Y are balanced; X and Z are unbalanced.

Explanation: For W and Y the up and down forces are equal and the left and right forces are equal (net vertical = 0, net horizontal = 0). For X (35 → vs 25 ←) and Z (22 ← with 0 →) there is a net horizontal force, so they are unbalanced.