3-20 The absolute pressure in water at a depth of 8 m is read to be 175 kPa. Determine (a) the local atmospheric pressure, and (b) the absolute pressure at a depth of 8 m in a liquid whose specific gravity is 0.78 at the same location. 11

The L-shaped rod AOCD has an 80 kg mass hanging from it at B. The rod is leaning against a smooth wall at A. Point B is half way up OA. There is a journal bearing at C and a thrust bearing at D. They are properly aligned. A force F is pulling in the x-direction at B. Just as the rod comes off of the wall at A, what is the magnitude of the force F. 1 m B F 1m

The collar is fixed to rod AB and supports a weight W = 20 N acting in the negative z direction as shown. Determine the components of the weight that are parallel and perpendicular to rod AB.

2-119. A force of F ={-40k} lb acts at the end of the pipe. Determine the magnitudes of the components F, and F, which are directed along the pipe's axis and perpendicular to it. Prob. 2-119 3 It 3 ft F F= (-40 k) Ib