Question

If the force represented by  is acting through the point , then its moment about the point (1, 3, 1) is 

Solution

Correct option is

 

We have,     

Let P (5, 4, –3) and O (1, 3, 1) be the given points. Then,   

        

  

      

SIMILAR QUESTIONS

Q1

If the diagonals of a parallelogram are represented by the vectors , then its area in square units is

Q2

If  are three vectors such that  then

Q3

Let  be unit vectors such that . Which one of the following is correct?

Q4

Let  be a unit vector perpendicular to unit vectors  and if the angle between  is α, then  is

Q5

If the vectors  are such that  form a right handed system, then  is

Q6

If the area of a parallelogram whose diagonals coincide with the following pair of vectors is , then vectors are

Q7

Let A vector  satisfying 

Q8

Vectors  are inclined at an angle θ = 60o.

Q9

Let  be unit vector such that  If the angle between 

Q10

The moment of the couple formed by the force  acting at the points (9, –1, 2) and (3, –2, 1) respectively, is