Question

Among of the following, which cannot be the magnitude of the resultant force of 5N and 10 N ?

12 N
8 N
4 N
5 N

Answer 1

The correct option is 4N

Step-by-step explanation:

The maximum possible magnitude of resultant for any two given vectors a and b is (a+b) and minimum is (a-b).

So the maximum resultant is 5+10= 15N and the minimum is 5N.

As 5N is larger than 4N, this cannot be the magnitude of the resultant force.