Do not round intermediate calculations. Give your final answer(s) to three significant
figures.
Two solid cylindrical rods AB and BC are welded together at B and loaded as shown.
Knowing that the average normal stress must not exceed 140 MPa in either rod

Do not round intermediate calculations. Give your final answer(s) to three significant
figures.
Two hydraulic cylinders are used to control the position of the robotic
arm ABC . Knowing
A and D each have a PPGLDPHWHU and happen to
that the control rods at

MECHANICS - THEORY
Normal Stress
Consider a bar subjected to axial force P, with a cut taken
perpendicular to its axis, exposing the internal crosssection of area A. The force per unit area acting normal to
the cross-section is the stress. The symbol used

Do not round intermediate calculations. Give your final answer(s) to three significant
figures.
E = 71 GPa
A tube made of a certain material is used to support a compressive load. If
and the maximum allowable change in length is 0.015%, determine the maxi

CE 3400 Sec 02 Quiz 1 ﬁcﬁwgg‘h Summer 2015 Name: I/Vﬂj/‘Q/ 7% ZWM
A steel control rod is 5.5 ft. long and must not stretch more than 0.04 in. when a Z-kip tensile load is applied
to it. Knowing that E: 29x10‘ psi, determine:
(a) the smallest diameter rod

1.14 For the clevis connection shown in Fig.
P1.14, the shear stress in the 5/16 in. p P
diameter bolt must be limited to 40 ksi. e.— —->
Determine the maximum load P that may be
applied to the connection.
clevis
Pig. P1_14 Solution
Consider a FBD of the

PROBLEM 1.19
The axial force in the column supporting the timber beam shown is
P = 20 kips. Determine the smallest allowable length L of the bearing
plate if the bearing stress in the timber is not to exceed 400 psi.
PROBLEM 1.27
For the assembly and load

The company chosen to research is Uber. Uber, is headquartered in San Francisco California, its
one of the fastest growing online transportation network companies. Uber works as a location-based
application that provides taxi services in a more safe, conv