Two transmission belts pass over a double-sheaved pulley that is attached to an axle supported by bearings at A and D. The radius of the inner sheave is 125 mm and the radius of the outer sheave is 250 mm. Knowing that when the system is at rest, the tension is 120 N in both portions of belt B and 180 N in both portions of belt C, determine the reactions at A and D. Assume that the bearing at D does not exert any axial thrust. 150 mm 100 mm 200 mm Te OD= (60.0 N) j + (166.7 N) k OD = (166.7 N)j + (60.0 N) k OD = (80.0 N) j + (200.0 N) k OD = (200.0 N) j + (80.0 N) k OD = (100.0 N)j+ (240.0 N) k OD = (240.0 N) j+ (100.0 N) k

The beam shown is supported by a pin at A and rope BDE as shown. Knowing that L = 1.5 m and that the mass suspended from C is 31 kg, determine the tension in rope BDE and the reactions at A. Enter the magnitude of the tension in rope BDE below, in N to the nearest whole N. (Take g = 9.81 m/s²) 2 m B m E M

2.The lever BCD is hinged at C and is attached to a control rod at B. If P = 200 N, determine (a) the tension in rod AB, (b) the reaction at C. D 75 mm 90° 30 mm B 40 mm

D A₂ 4 m || D B The A-frame shown supports a 500 N force D at the midpoint of member AB as shown. Ay 4 m Determine the scalar components of the reactions at pins A and C. Note: the sign of a scalar component indicates the sense of the force. A positive sense indicates the force points towards the positive end of the corresponding axis. 6 m C₂ Cy ||