5-57. A 10-kN load is suspended from the boom at D. Determine the force in the hydraulic cylinder BC and the pin reaction at A. 1.5 m C 45° 3m 330⁰ 10 kN FRD:

The bobcat loader (Figure Q3) has a mass of 1200-kg, shows the center of mass is at G1. If there is a 200-kg pebble in the bucket, with center of mass at G2 determine the reactions of each pair of wheels A and B on the ground and the force in the hydraulic cylinder CD and at the pin E. There is a similar linkage on each side of the loader. L0.5 m E 0.1 m_ D 0.2 m G2 0.18 m G1 0.6 m 0.5 m В 0.45 m 1.2 m 0.15 m 0.2 m 0.05 m Figure Q3

Find the horizontal and vertical reactions at the pin at B. Note that the support at D is fixed. Sign convention for the positive x and y direction applies for the answers. Diagram not to scale Answers: (a) -4 kN, 2 kN (b) 4 kN, -2 kN (c) 1.5 kN, 3 kN (d) -1.5 kN, -3 kN 3 kN B A D TTT 2 m 4 kN 2 m C 1m 2 m 5 m

Determine the vertical component of the pin reaction at C.