Knowing that the tension in cable ad is 405, determine (a) the
angle between cable ad and the boom ab, (b) the projection on ab of
the force exerted by cable ad at point a.

Analyze the factors that influence the choice between the following pairs of processes to make the products indicated: i) sand casting versus die casting of an electric-motor housing ii) thread rolling versus machining of a bolt for high-strength application. (co3/c5)