bar is 250 mm long and 10 mm square over part of its length, the remainder being circular with a diameter of 25 mm. A gradually applied tensile load P kN induces a maximum stress in the bar of 200 MPa. The total strain energy in the bar when this stress of 200 MPa is acting is 1,3 J. Calculate (a) the load P; (b) the total extension of the bar; (c) the length of the square portion of the bar; (d) the suddenly applied load that will induce the same amount of energy; and (e) the load that falls from a height of 8 mm and induces 1,3 J in the bar. (Take E as 200 GPa.)

bar is 250 mm long and 10 mm square over part of its length, the remainder being circular with a diameter of 25 mm. A gradually applied tensile load P kN induces a maximum stress in the bar of 200 MPa. The total strain energy in the bar when this stress of 200 MPa is acting is 1,3 J. Calculate (a) the load P; (b) the total extension of the bar; (c) the length of the square portion of the bar; (d) the suddenly applied load that will induce the same amount of energy; and (e) the load that falls from a height of 8 mm and induces 1,3 J in the bar. (Take E as 200 GPa.)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

8.13 A solid steel bar is 250 mm long and 10 mm square over part of its length, the remainder being
circular with a diameter of 25 mm. A gradually applied tensile load P kN induces a maximum
stress in the bar of 200 MPa. The total strain energy in the bar when this stress of 200 MPa is
acting is 1,3 J. Calculate (a) the load P; (b) the total extension of the bar; (c) the length of the
square portion of the bar; (d) the suddenly applied load that will induce the same amount of
and (e) the load that falls from a height of 8 mm and induces 1,3 J in the bar. (Take E as
energy;
200 GPa.)

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