Question
Transcribed Text
Problem H6-3
Consider the crane shown below.
(a) Draw a freebody diagram of the entire structure.
(b) Calculate the internal normal force, shear force, and bending moment at point C.
(c) Calculate the internal normal force, shear force, and bending moment at point A.
D
B
.A
F
ft-
3 tt
5ft
800 1b
7ft
Problem H6-4
Consider the mechanism shown below. A force P=1 kN is applied at Das shown. The cable AB has diameter of 10 mm.
(a) What is the average normal stress in the cable AB?
(b) Determine the diameter of pin at point Csuch that the average shear stress in the pinis 50MPa.
(c) Based on the diameter you solved for inC, determine the average bearing stress in the bracket.
75 mm
9 mm
*
300 mm
.
-
A
B
125 mm
D
5 mm
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