Minimum number of unequal coplanar forces whose vector sum can be equal to zero is :
2.
Resultant of which of the following may be equal to zero?
Hint: The resultant of three vectors will be zero if and only if the sum of two smaller vectors is equal to or greater than third vector.
3.
The maximum resultant of two vectors is 26 units and the minimum resultant is 16 units, then the magnitude of each vector is:
A=21, B=5
4.
The algebraic sum of modulus of two vectors acting at a point is 20 N. The resultant of these vectors are perpendicular to the smaller vector and has a magnitude of 10 N. If the smaller vector is of magnitude b, then the value of b is :
5.
The modulus of the vector product of two vectors is 1/?3 times their scalar product. The angle between vectors
is :
