Strength of Materials (Stresses in a truss)

Submitted by Jal Rhee Ducus… on

Mga idol. Pwede pa turo pano to? Thanks in advance.

Problem 1

For a truss loaded as show, choose the lightest 2-angle sections to safely carry the maximum stress. The yielding stress of steel is 240 MPa. Use allowable compressive stress of 0.45 of the yielding stress and allowable tensile stress of 0.60 of the yielding stress. Assume that provision for buckling is provided.
F1 = 15 KN; F2 = 14 KN

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Colored beads

Submitted by Alexander on

there were 198 blue beads in Box A and 219 Pink beads in Box B. some green beads were added to Box A and some yellow beads were added to Box B. for every 3 blue beads in Box A, 13 green once were added to Box A as s result, Box A had 4 times as many beads as Box B. how many yellow beads were added to Box B?