Question

Q. resultant of which of the following may be equal to zero

a) 10N ,10N, 10N

b)10N,10N,25N

c)10N,10N,35N

Answer 1

If the magnitude of any vector is more than the sum of remaining two vectors, then the resultant cannot be zero. It is in case of A) 10<10+10 that the magnitude is less than the sum of other two vectors.
For other options magnitude of any vector is more than the sum of remaining two vectors.