Elementary Differential Equations
10th Edition
ISBN: 9780470458327
Author: William E. Boyce, Richard C. DiPrima
Publisher: Wiley, John & Sons, Incorporated
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Chapter 3.3, Problem 42P
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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 3 Solutions
Elementary Differential Equations
Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 1 through 8, find the general...Ch. 3.1 - In each of Problems 9 through 16, find the...Ch. 3.1 - In each of Problems 9 through 16, find the...
Ch. 3.1 - In each of Problems 9 through 16, find the...Ch. 3.1 - Prob. 12PCh. 3.1 - Prob. 13PCh. 3.1 - Prob. 14PCh. 3.1 - In each of Problems 9 through 16, find the...Ch. 3.1 - Prob. 16PCh. 3.1 - Prob. 17PCh. 3.1 - Prob. 18PCh. 3.1 - Prob. 19PCh. 3.1 - Prob. 20PCh. 3.1 - Solve the initial value problem y″ − y′ − 2y = 0,...Ch. 3.1 - Solve the initial value problem 4y″ − y = 0, y(0)...Ch. 3.1 - Prob. 23PCh. 3.1 - Prob. 24PCh. 3.1 - Prob. 25PCh. 3.1 - Prob. 26PCh. 3.1 - Prob. 27PCh. 3.1 - Prob. 28PCh. 3.2 - In each of Problems 1 through 6, find the...Ch. 3.2 - In each of Problems 1 through 6, find the...Ch. 3.2 - In each of Problems 1 through 6, find the...Ch. 3.2 - In each of Problems 1 through 6, find the...Ch. 3.2 - In each of Problems 1 through 6, find the...Ch. 3.2 - In each of Problems 1 through 6, find the...Ch. 3.2 - In each of Problems 7 through 12, determine the...Ch. 3.2 - In each of Problems 7 through 12, determine the...Ch. 3.2 - In each of Problems 7 through 12, determine the...Ch. 3.2 - In each of Problems 7 through 12, determine the...Ch. 3.2 - In each of Problems 7 through 12, determine the...Ch. 3.2 - In each of Problems 7 through 12, determine the...Ch. 3.2 - Verify that y1(t) = t2 and y2(t) = t−1 are two...Ch. 3.2 - Verify that y1(t) = 1 and y2(t) = t1/2 are...Ch. 3.2 - Show that if y = φ(t) is a solution of the...Ch. 3.2 - Can y = sin(t2) be a solution on an interval...Ch. 3.2 - If the Wronskian W of f and g is 3e4t, and if f(t)...Ch. 3.2 - Prob. 18PCh. 3.2 - If W(f, g) is the Wronskian of f and g, and if u =...Ch. 3.2 - If the Wronskian of f and g is t cos t − sin t,...Ch. 3.2 - Assume that y1 and y2 are a fundamental set of...Ch. 3.2 - Prob. 22PCh. 3.2 - Prob. 23PCh. 3.2 - Prob. 24PCh. 3.2 - Prob. 25PCh. 3.2 - Prob. 26PCh. 3.2 - Prob. 27PCh. 3.2 - Prob. 28PCh. 3.2 - Prob. 29PCh. 3.2 - Prob. 30PCh. 3.2 - Prob. 31PCh. 3.2 - Prob. 32PCh. 3.2 - Prob. 33PCh. 3.2 - Prob. 34PCh. 3.2 - Prob. 35PCh. 3.2 - If the Wronskian of any two solutions of y″ +...Ch. 3.2 - Prob. 37PCh. 3.2 - Prob. 38PCh. 3.2 - Prob. 39PCh. 3.2 - Prob. 40PCh. 3.2 - Prob. 41PCh. 3.2 - Prob. 42PCh. 3.2 - Prob. 43PCh. 3.2 - Prob. 44PCh. 3.2 - Prob. 45PCh. 3.2 - Prob. 46PCh. 3.2 - Prob. 47PCh. 3.2 - Prob. 48PCh. 3.2 - Prob. 49PCh. 3.2 - Prob. 50PCh. 3.2 - Prob. 51PCh. 3.3 - In each of Problems 1 through 6, use Euler’s...Ch. 3.3 - In each of Problems 1 through 6, use Euler’s...Ch. 3.3 - In each of Problems 1 through 6, use Euler’s...Ch. 3.3 - In each of Problems 1 through 6, use Euler’s...Ch. 3.3 - In each of Problems 1 through 6, use Euler’s...Ch. 3.3 - In each of Problems 1 through 6, use Euler’s...Ch. 3.3 - In each of Problems 7 through 16, find the general...Ch. 3.3 - In each of Problems 7 through 16, find the general...Ch. 3.3 - In each of Problems 7 through 16, find the general...Ch. 3.3 - In each of Problems 7 through 16, find the general...Ch. 3.3 - Prob. 11PCh. 3.3 - Prob. 12PCh. 3.3 - In each of Problems 7 through 16, find the general...Ch. 3.3 - Prob. 14PCh. 3.3 - Prob. 15PCh. 3.3 - Prob. 16PCh. 3.3 - Prob. 17PCh. 3.3 - Prob. 18PCh. 3.3 - Prob. 19PCh. 3.3 - Prob. 20PCh. 3.3 - In each of Problems 17 through 22, find the...Ch. 3.3 - In each of Problems 17 through 22, find the...Ch. 3.3 - Prob. 23PCh. 3.3 - Prob. 24PCh. 3.3 - Prob. 25PCh. 3.3 - Prob. 26PCh. 3.3 - Prob. 27PCh. 3.3 - Prob. 28PCh. 3.3 - Prob. 29PCh. 3.3 - Prob. 30PCh. 3.3 - Prob. 31PCh. 3.3 - Prob. 32PCh. 3.3 - Prob. 33PCh. 3.3 - Prob. 34PCh. 3.3 - Prob. 35PCh. 3.3 - Prob. 36PCh. 3.3 - Prob. 37PCh. 3.3 - Prob. 38PCh. 3.3 - Prob. 39PCh. 3.3 - Prob. 40PCh. 3.3 - Prob. 41PCh. 3.3 - Prob. 42PCh. 3.3 - Prob. 43PCh. 3.3 - Prob. 44PCh. 3.3 - Prob. 45PCh. 3.3 - Prob. 46PCh. 3.4 - In each of Problems 1 through 10, find the general...Ch. 3.4 - Prob. 2PCh. 3.4 - Prob. 3PCh. 3.4 - Prob. 4PCh. 3.4 - Prob. 5PCh. 3.4 - Prob. 6PCh. 3.4 - Prob. 7PCh. 3.4 - Prob. 8PCh. 3.4 - Prob. 9PCh. 3.4 - Prob. 10PCh. 3.4 - In each of Problems 11 through 14, solve the given...Ch. 3.4 - Prob. 12PCh. 3.4 - Prob. 13PCh. 3.4 - Prob. 14PCh. 3.4 - Prob. 15PCh. 3.4 - Prob. 16PCh. 3.4 - Prob. 17PCh. 3.4 - Consider the initial value problem
9y″ + 12y′ + 4y...Ch. 3.4 - Prob. 19PCh. 3.4 - Prob. 20PCh. 3.4 - Prob. 21PCh. 3.4 - Prob. 22PCh. 3.4 - Prob. 23PCh. 3.4 - Prob. 24PCh. 3.4 - Prob. 25PCh. 3.4 - Prob. 26PCh. 3.4 - Prob. 27PCh. 3.4 - Prob. 28PCh. 3.4 - Prob. 29PCh. 3.4 - Prob. 30PCh. 3.4 - Prob. 31PCh. 3.4 - The method of Problem 20 can be extended to second...Ch. 3.4 - In each of Problems 33 through 36, use the method...Ch. 3.4 - Prob. 34PCh. 3.4 - Prob. 35PCh. 3.4 - Prob. 36PCh. 3.4 - Prob. 37PCh. 3.4 - Prob. 38PCh. 3.4 - Prob. 39PCh. 3.4 - Euler Equations. In each of Problems 40 through...Ch. 3.4 - Prob. 41PCh. 3.4 - Prob. 42PCh. 3.4 - Prob. 43PCh. 3.4 - Prob. 44PCh. 3.4 - Prob. 45PCh. 3.5 - In each of Problems 1 through 14, find the general...Ch. 3.5 - In each of Problems 1 through 14, find the general...Ch. 3.5 - In each of Problems 1 through 14, find the general...Ch. 3.5 - Prob. 4PCh. 3.5 - Prob. 5PCh. 3.5 - Prob. 6PCh. 3.5 - Prob. 7PCh. 3.5 - In each of Problems 1 through 14, find the general...Ch. 3.5 - Prob. 9PCh. 3.5 - Prob. 10PCh. 3.5 - In each of Problems 1 through 14, find the general...Ch. 3.5 - Prob. 12PCh. 3.5 - Prob. 13PCh. 3.5 - Prob. 14PCh. 3.5 - Prob. 15PCh. 3.5 - Prob. 16PCh. 3.5 - In each of Problems 15 through 20, find the...Ch. 3.5 - Prob. 18PCh. 3.5 - Prob. 19PCh. 3.5 - Prob. 20PCh. 3.5 - Prob. 29PCh. 3.5 - Prob. 30PCh. 3.5 - Prob. 31PCh. 3.5 - Prob. 32PCh. 3.5 - Prob. 33PCh. 3.5 - Prob. 34PCh. 3.5 - Prob. 35PCh. 3.5 - Prob. 36PCh. 3.5 - Prob. 37PCh. 3.5 - Prob. 38PCh. 3.5 - Prob. 39PCh. 3.6 - In each of Problems 1 through 4, use the method of...Ch. 3.6 - Prob. 2PCh. 3.6 - Prob. 3PCh. 3.6 - Prob. 4PCh. 3.6 - Prob. 5PCh. 3.6 - Prob. 6PCh. 3.6 - Prob. 7PCh. 3.6 - Prob. 8PCh. 3.6 - Prob. 9PCh. 3.6 - Prob. 10PCh. 3.6 - Prob. 11PCh. 3.6 - Prob. 12PCh. 3.6 - Prob. 13PCh. 3.6 - Prob. 14PCh. 3.6 - Prob. 15PCh. 3.6 - Prob. 16PCh. 3.6 - Prob. 17PCh. 3.6 - Prob. 18PCh. 3.6 - Prob. 19PCh. 3.6 - Prob. 20PCh. 3.6 - Prob. 21PCh. 3.6 - Prob. 22PCh. 3.6 - Prob. 23PCh. 3.6 - Prob. 24PCh. 3.6 - Prob. 25PCh. 3.6 - Prob. 26PCh. 3.6 - Prob. 27PCh. 3.6 - Prob. 28PCh. 3.6 - Prob. 29PCh. 3.6 - Prob. 30PCh. 3.6 - Prob. 31PCh. 3.6 - Prob. 32PCh. 3.7 - In each of Problems 1 through 4, determine ω0, R,...Ch. 3.7 - Prob. 2PCh. 3.7 - Prob. 3PCh. 3.7 - Prob. 4PCh. 3.7 - Prob. 5PCh. 3.7 - Prob. 6PCh. 3.7 - Prob. 7PCh. 3.7 - Prob. 8PCh. 3.7 - Prob. 9PCh. 3.7 - Prob. 10PCh. 3.7 - Prob. 11PCh. 3.7 - Prob. 12PCh. 3.7 - Prob. 13PCh. 3.7 - Prob. 14PCh. 3.7 - Prob. 15PCh. 3.7 - Prob. 16PCh. 3.7 - Prob. 17PCh. 3.7 - Prob. 18PCh. 3.7 - Prob. 19PCh. 3.7 - Prob. 20PCh. 3.7 - Prob. 21PCh. 3.7 - Prob. 22PCh. 3.7 - Prob. 23PCh. 3.7 - Prob. 24PCh. 3.7 - Prob. 26PCh. 3.7 - Prob. 27PCh. 3.7 - Prob. 28PCh. 3.7 - Prob. 29PCh. 3.7 - Prob. 30PCh. 3.7 - Prob. 31PCh. 3.8 - Prob. 1PCh. 3.8 - Prob. 2PCh. 3.8 - Prob. 3PCh. 3.8 - Prob. 4PCh. 3.8 - Prob. 5PCh. 3.8 - Prob. 6PCh. 3.8 - Prob. 7PCh. 3.8 - Prob. 8PCh. 3.8 - Prob. 9PCh. 3.8 - Prob. 10PCh. 3.8 - Prob. 11PCh. 3.8 - Prob. 12PCh. 3.8 - Prob. 14PCh. 3.8 - Prob. 15PCh. 3.8 - Prob. 16P
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