Mathematics For Machine Technology
8th Edition
ISBN: 9781337798310
Author: Peterson, John.
Publisher: Cengage Learning,
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Chapter 83, Problem 6A
Find the size of
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5.12 A steel wire 300 feet long and 1½-½ inch in diameter
weighs 0.042 #/ft. If the wire is suspended vertically from
its upper end, calculate (a) the maximum tensile stress due
to its own weight and (b) the maximum weight W that can
be safely supported assuming a safety factor of three and
an ultimate tensile stress of 65 ksi.
a. The maximum tensile stress due to
its own weight
b. Maximum weight
5.6
The turnbuckles in the diagram shown are tightened
until the compression block DB exerts a force of 10,000# on
the beam at B. Member DB is a hollow shaft with an inner
diameter of 1.0 inch and outer diameter of 2 inches. Rods
AD and CD each have cross-sectional areas of 1.0 in.². Pin
C has a diameter of 0.75 inch. Determine:
a. The axial stress in BD-
b. The axial stress in CD-
c. The shearing stress in pin C.
B
UB
CD
PIN
VIEWED FROM BELOW
5.15 The ends of the laminated-wood roof arch shown are
tied together with a horizontal steel rod 90 feet, "10 inches"
long, which must withstand a total load of 60 k. Two turn-
buckles are used. All threaded rod ends are upset.
a. Determine the required diameter D of the rod if
the maximum allowable stress is 20 ksi.
b. If the unstressed length of the rod is 90 feet,
"10 inches" and there are four threads per inch
on the upset ends, how many turns of one
turnbuckle will bring it back to its unstressed
length after it has elongated under full allowable
tensile stress? E = 29 × 103 ksi.
a. Required diameter D
b. Number of turns
LAMINATED WOOD
ROOF ARCH
TIE ROD
TURNBUCKLE
DETAIL:
UPSET END
Chapter 83 Solutions
Mathematics For Machine Technology
Ch. 83 - Prob. 1ACh. 83 - Prob. 2ACh. 83 - Prob. 3ACh. 83 - Prob. 4ACh. 83 - A machinist needs to lay out three holes in a...Ch. 83 - Find the size of A to the nearest second?Ch. 83 - Determine the polar coordinates of points A...Ch. 83 - Determine the polar coordinates of points A...Ch. 83 - Plot the following points on the polar coordinate...Ch. 83 - The following figure shows eight equally spaced...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, advanced-math and related others by exploring similar questions and additional content below.Similar questions
- 5.8 A reinforced concrete column is 12 feet long, and un- der load, it shortens 3 inches". Determine its average unit strain. Average Unit Strainarrow_forward5.10 A 500-foot-long steel cable is loaded in tension and registers an average unit strain of 0.005. Determine the total elongation due to this load. Total Elongationarrow_forward5.14 A 100-foot-long surveyor's steel tape with a cross- sectional area of 0.006 square inch must be stretched with a pull of 16# when in use. If the modulus of elasticity of this steel is E = 30,000 ksi, (a) what is the total elongation 8 in the 100 foot tape and (b) what unit tensile stress is pro- duced by the pull? a. Elongation b. Tensile Stressarrow_forward
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