The minimum number of unequal forces whose vector sum can equal zero is
A) 2.
B) 3.
C) 4.
D) 5.

Question

Quizplus · Accepted Answer

This is a well-known concept in physics called the "triangle rule." If we have two vectors, we can always create a triangle with those vectors as two sides, and the third side of the triangle will be the vector sum. Therefore, we need at least three vectors (forces) to form a closed triangle and for the vector sum to equal zero.

The Minimum Number of Unequal Forces Whose Vector Sum Can