WORLD FOR CIVIL

Statics & Strength of Materials

Problem Assignment - Coplanar

Draw a free body diagram and a force diagram as a part of the solution for each problem.
All problems are coplanar with concurrent forces.

1. Calculate the force in cable AB and the angle q for the support system shown. (447.2 lb. 63.4^o)

2. Calculate the horizontal force F that should be applied to the 200lb weight shown in order that the cable AB be inclined at an angle of 30° with the vertical. (115 lb.)

3. Calculate the force in each cable for the suspended weight shown. (439 lb., 538 lb.)

4. Two forces of 100 lb. each act on a body at an angle of 120^o with each other. What is the weight of the body the two forces are supporting? (100 lb.)

5. A wire 24 inches long will stand a straight pull of 100 lb. The ends are fastened to two points 21 inches apart on the same level. What weight suspended from the middle of the wire will break it? (96.8 lb.)

6. Calculate the reactions of the two smooth inclined planes against the cylinder shown. The cylinder weighs 150 lbs. (79.8 lb., 102.6 lb.)