A rectangular steel eyebar 3/4 inches thick and 24 ft long between centers of end pins is subjected to an axial tensile load of 50,000 lb. If this bar must not elongate more than 0.20 inches, calculate

(a) the width of the bar and
(b) tensile stress developed at maxium elongation, using required width calculated in (a)

a) 3.31 inches

b) 20139 psi

Explanation:

L = 24 ft = 24*12 = 288 inches

Let the elastic modulus of the steel bar (structured ASTM-A36) . If a 288 inches long bar must no elongate more than 0.2 inches, then its strain must be:

Then the tensile stress must not exceed

If the tensile load is 50000 lb then the cross-sectionarea must not be larger than

If it's 3/4 inches thick then the width must be

2.48 / (3/4) = 3.31 inches

answer:

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the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only