00000BE100121805

b) A rigid bar AB is acted by forces as shown in figure below. Reduce the system (5)
into (i) a single force, (ii) Force moment system at A.

‎m‏ رو ےد

‎10 a) For the system of forces, determine the magnitude,direction of the resultant (5)
force about A.

‎100N

‎b) A force of 22N is acting in the direction of 91+6j-2k through a point P(4,- (5)
1,7).Find the moment of the force about a point O(1,-3,2).

‎11 ஐ Determine the angle between the vectors A = 41-3j+k and B=21-6j-3k. (4)
b) Determine the reactions of support at A and B.
(6)
6kN 10 300
=-=
A
B

‏ہے .1

‎2mm 4mm 1m

‎SET II
(ANSWER ANY 2 QUESTIONS : 2 X 10 = 20 MARKS)
12 A 4m long ladder, 180N in weight, is supported against a wall (which (10)
isperpendicular to the floor) with its foot on the floor. The coefficient of

‎friction between wall and the ladder is 0.2 and that between floor and ladder is