b Five forces act on a link in the gear shifting mechanism of a lawn mower as shown in Figure Q2 2 The vector sum of the five forces on the bar is zero The sum of their moments about the point where the forces Ax and Ay act is zero i Determine the forces Ax Ay and B 9 marks i1 Determine the sum of the moments of the forces about the point where the force B acts 3 marks A 25 kN 120 650 mm 30 kN 450 mm 45 650 mm 350 mm Figure Q2 2 Link in the gear shifting mechanism of a lawn mower