73.
The beam
AB
is fixed to the wall and has a uniform weight of 80 lb/ft. If the trolley supports a load of
1500 lb, determine the resultant internal loadings acting on the cross sections through points
C
and
D.
74.
The shaft is supported by a smooth thrust bearing at
A
and a smooth journal bearing at
B
. Determine
the resultant internal loadings acting on the cross section at
C.
76.
Determine the normal force, shear force, and moment at a section through point
C
. Take
P =
8 kN.
713.
The blade of the hackshaw is subjected to a pretension force of
F =
100 N. Determine the resultant
internal loadings acting on section
aa
that passes through point
D.
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724.
The builtup shaft consists of a pipe
AB
and a solid rod
BC.
The pipe has an inner diameter of 20
mm and outer diameter of 28 mm. The rod has a diameter of 12 mm. Determine the average normal stress
at points
D
and
E
and represent the stress on a volume element located at each of these points.
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 Fall '13
 Castro
 Force, 10 mm, 12 mm, 20 mm, 6mm, 28 mm

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