When liquid flow throw a narrow tue, there an oppositional force applied between two layer of liquid . The 1st layer try to pull back . This property of liquid is said to be viscocity .
Let A and B be the two vectors of magnitude 10 unit . If they are inclined to X-axis at angle 30 degree and 60 degree respectively. Find the resultant.
F= mg =120*9.8 =1176 now work done W= F*D =1176*5 =5880 J hence correct option is (b)
square root of 225