(Solved): A telescopic boom lift, shown in the picture, is used to by workers to repair utility lines. The c ...

A telescopic boom lift, shown in the picture, is used to by workers to repair utility lines. The combined mass of the worker and the bucket is \( 175 \mathrm{~kg} \), applied effectively at point A. Determine the forces at the pin joint, D, and in the hydraulic cylinder BC. The boom is at an angle, \( \alpha \), of 40 degrees, and the cylinder is at an angle, \( \theta \), of 45 degrees