Question

How many minimum number of vectors needed to make a zero resultant vector

Answer 1

Answer:  

4

Explanation:

If the vectors are in different planes, they would need to cancel components in at least 3 dimensions to make the resultant 0.

Hence, we would need at least 4 vectors such that 3 of them when added cancel their components in a plane and add to get a single vector perpendicular to this plane. Fourth vector would nullify this perpendicular vector.

Answer 2

Answer:

3

Explanation: