Question

How many minimum number of non-zero vectors in different planes can be added to give zero resultant
[a] 2
[b]3
[d]15
[C] 4​

Answer 1

Answer:

4

Explanation:

so let us imagine 2 vectors A and B . Now they both and up to give 0 when they both have equal magnitude and opposite direction .

But since we are talking about vectors in different planes, then A and B up to give a resultant say R which lies in the same plans as A and B . (You may use the parallelogram law or the or the triangle law)

Now, R can never be zero, it has:a positive magnitude. To get a resultant of zero we need to take another vector in the opposite direction of R and equal in magnitude, say S

S can never be in the same plane as A and B which you can imagine easily . So we got the answer 4