Essentials in the theory of framed structures . Fig. 36. Fig. 37. II. Find the weight and vertical gravity line of the body (Fig. 36) if themagnitude of the force at A is 781 lb. What is the direction of the force at .4 ? 12. Neglect the weight of thebody (Fig. 37) and find the magni-tude of A, and the location anddirection of a force of 1,220 lb. forequilibrium. 13. A level beam of uniform cross-section 10 ft. long, weighing supported at each end, carries asingle load of 5 tons at is the problem of finding thetwo reactions indeterminate? ->||J An algebraic solution
Essentials in the theory of framed structures . Fig. 36. Fig. 37. II. Find the weight and vertical gravity line of the body (Fig. 36) if themagnitude of the force at A is 781 lb. What is the direction of the force at .4 ? 12. Neglect the weight of thebody (Fig. 37) and find the magni-tude of A, and the location anddirection of a force of 1,220 lb. forequilibrium. 13. A level beam of uniform cross-section 10 ft. long, weighing supported at each end, carries asingle load of 5 tons at is the problem of finding thetwo reactions indeterminate? ->||J An algebraic solution for each of „ the two following problems is long and involved. Show that thegraphic solution is comparatively short in each l 1 h- 1 ,<^^$^^§^ Sk B ~t5 ! sNN ?X I 1 1 A ^^^^1 » %V Di i /^ ^^^^^^^^^ «m ^^^nV V ^ C _--—1; \^ w* 39 Fig. 39. Sec. VI EQUILIBRIUM OF COPLANAR FORCES $g 14. The magnitudes of the forces at A and B (Fig. 38) are 13 lb. and 17 Neglect the weight of the body and find the directions of theforces at A and B, and the magnitude of the force C. 15. The magnitudes of the forces a,tA,B and C (Fig. sg) are 41 lb., 50 lb. and25 lb. respectively. Neglect the weight of the body and find the three unknowndirections. CHAPTER IIAPPLICATION OF THE PRINCIPLES OF EQUILIBRIUM Sec. I. Simple Trusses 37. Rigid Body.—In the foregoing section reference isfrequently made to a rigid body. No such thing exists innature, if rigid is used in the sense of unyielding. AllsoHds may be considered to approximate in a greater or lessdegree an ideal state of complete rigidity. A steel casting, agranite rock, an oak block, putty and rubber—
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectstructu, bookyear1922
