Q26 of 43 Page 85

A vector ‘A’ points vertically upward and ‘B’ points towards north. The vector product Vector A multiply by Vector B is

Let north be in y direction, upwards be in z direction and east in x direction.

Then, ,



Where A and B are magnitudes of and respectively


Now, vector product of A and B =


=


=


=


So, vector points towards west


More from this chapter

All 43 →
24

Two forces F1 and F2 are acting on a body. One force is double that of the other force, and the resultant is equal to the greater force. Then the angle between the two forces is?

 25

A particle projected from the ground move at 45° with horizontal one second after projection and speed is minimum two seconds after projection. The angle of projection of particle is (neglect air resistance)?

 27

Which is greater the angular velocity of the hour hand of a watch or angular velocity of earth around its axis?

 28

A train moving at a constant velocity of 54 kmhr–1 moves east wards for 30min then due north with the same speed for 40 min. What is the average velocity of the train during this run?