Physics Complete: Vectors Cross Product

The previous post of the blog deals with dot product of vectors.Cross product is another way of multiplying two vectors . Here the the result of product is a vector which will have both magnitude and direction.

1 . When the perpendicular component of one vector with respect to the another vector is effective then the cross product is taken.

2 . The cross product of two vectors is a vector and its direction is given by right hand cork screw rule.

3 . If a and b are two vectors and the angle between them is then the cross product of and is given by a×b = |a| |b| sin Ø( n) where n s a unit vector perpendicular to the plane containing a and b .

4 . If two vectors are parallel i.e. Θ = 0 or 180 then a × b = 0 .

5 . If two vectors are perpendicular to each other a × b = ab and it is maximum .

6 . If i , j and k are unit vectors then