PRACTISE QUESTION BANK Q.5 Q.6 Q.7 ENGINEERING MECHANICS (ESC-104-CVL) Level H 6 M Find value of a if the resultant of given three forces is parallel to the inclined plane. Also find the corresponding magnitude of the resultant. [Ans. a 56.31, R = 1021.11 N] y axis 400 N 600 300 N.-x axis -20 Level M 5 M Determine the resultant of the system of parallel forces acting on a beam as shown in Fig. [Ans. R = 100 N acts in downward direction at 3 m on RHS of first force] 80 kN 30 kN 40 kN 50 kN 60 kN TIT IT x2mx2m 4 m Level M 5 M Three hikers as shown in figures crossing a foot bridge. Knowing that the weights of hikers at point C, D & E are 200 N, 175 N & 135 N respectively, determine horizontal distance A to the line of action of the resultant of the three hikers when a = 3.3 m. [Ans. R= 510 kN acts in downward direction at 7.816 m from point A on RHS] 18 m 4.5 m 1.5 a D B 2