Question
Sun May 06, 2012 By:
 

Let A and B be the two vectors of magnitude 10 units each.. If they are inclined to the x-axis at the angles of 30 and 60 respectivley , find the resultant .. DIAGRAM with full explation and steps

Expert Reply
Mon May 07, 2012
Magnitude of the resultant of two vector quantities is ( |A| + |B| + 2 |A| |B| cos (theta) ) where theta is the angle with x-axis.
 
when angle is 30 degree 
 
Resultant = sqrt( (10)2 + (10)2 + 2 .10.10 Cos 30))
 
When angle is 60 degree
 
Resultant = sqrt( (10)2 + (10)2 + 2 .10.10 Cos 60))

Home Work Help