Vector And Equipment

Question 1

Unit vector

Answer 1

A vector whose magnitude is one with no units in a given direction is called unit vector.
It is represented by a letter with a cap or hat on it.

Question 2

Position vector

Answer 2

The vector which represents the position of point or particle with respect to fixed origin is called position vector.

Question 3

Components of a vector

Answer 3

The effective value of a vector in a given direction is called component of a vector. A vector may be split into two or more components.

Question 4

The vector sum of three vectors gives a zero resultant. What can be the possible orientation of the vectors?

Answer 4

If the three vectors are represented by the sides of a triangle joined by head to tail rule, their sum will be zero.

Question 5

If one of the rectangular components of a vector is not zero, can it’s magnitude be zero? Explain

Answer 5

No it’s magnitude can not be zero.
The magnitude of A is given by
A=√Ax2+Ay2+Az2
This equation shows that magnitude of the vector will be zero only when all of its rectangular components are zero.