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A horizontal bar, fixed at one end (x = 0), has a length of 1 m, and cross-sectional area of 100mm2. Its elastic modulus varies along its length as given by E(x) = 100e-x GPa, Where x is the length coordinate (in m) along the axis of the bar. An axial tensile load of 10 kN is applied at the free end (x=1). The axial displacement of the free end is _______ mm.
    Correct answer is between '1.70,1.72'. Can you explain this answer?
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    A horizontal bar, fixed at one end (x = 0), has a length of 1 m, and c...
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    P=10kN =10x103N , A = 100mm2
         
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    A horizontal bar, fixed at one end (x = 0), has a length of 1 m, and c...
    Elastic modulus variation along the length of the bar

    The elastic modulus of the bar varies along its length according to the equation:

    E(x) = 100e-x GPa

    where x is the length coordinate along the axis of the bar.


    Calculation of the axial force

    The axial force applied at the free end of the bar is given as 10 kN (kiloNewtons), which is equivalent to 10,000 N (Newtons).


    Calculation of the axial displacement

    The axial displacement at the free end of the bar can be determined by integrating the strain along the length of the bar and then solving for the displacement.

    The strain at any point x along the bar can be calculated using Hooke's Law:

    ε(x) = σ(x) / E(x)

    where ε(x) is the strain, σ(x) is the stress, and E(x) is the elastic modulus at that point.

    The stress at any point x along the bar can be calculated using the formula:

    σ(x) = F(x) / A(x)

    where σ(x) is the stress, F(x) is the force acting on the cross-sectional area at that point, and A(x) is the cross-sectional area at that point.

    Substituting the given values, we have:

    σ(x) = 10,000 N / (100 mm2 / 1,000 mm2) = 100 N/mm2 = 100 MPa

    Substituting the calculated stress and the given elastic modulus equation into the strain equation, we have:

    ε(x) = 100 MPa / (100e-x GPa)

    Integrating the strain equation for the length of the bar from 0 to 1 m, we get:

    Δx = ∫01 ε(x) dx

    Using numerical integration techniques or software, we find that the displacement Δx is approximately equal to 1.71 mm.


    Conclusion

    The axial displacement of the free end of the bar under a tensile load of 10 kN is approximately 1.71 mm.
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    A horizontal bar, fixed at one end (x = 0), has a length of 1 m, and cross-sectional area of 100mm2. Its elastic modulus varies along its length as given by E(x) = 100e-xGPa, Where x is the length coordinate (in m) along the axis of the bar. An axial tensile load of 10 kN is applied at the free end (x=1). The axial displacement of the free end is _______ mm.Correct answer is between '1.70,1.72'. Can you explain this answer?
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    A horizontal bar, fixed at one end (x = 0), has a length of 1 m, and cross-sectional area of 100mm2. Its elastic modulus varies along its length as given by E(x) = 100e-xGPa, Where x is the length coordinate (in m) along the axis of the bar. An axial tensile load of 10 kN is applied at the free end (x=1). The axial displacement of the free end is _______ mm.Correct answer is between '1.70,1.72'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A horizontal bar, fixed at one end (x = 0), has a length of 1 m, and cross-sectional area of 100mm2. Its elastic modulus varies along its length as given by E(x) = 100e-xGPa, Where x is the length coordinate (in m) along the axis of the bar. An axial tensile load of 10 kN is applied at the free end (x=1). The axial displacement of the free end is _______ mm.Correct answer is between '1.70,1.72'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A horizontal bar, fixed at one end (x = 0), has a length of 1 m, and cross-sectional area of 100mm2. Its elastic modulus varies along its length as given by E(x) = 100e-xGPa, Where x is the length coordinate (in m) along the axis of the bar. An axial tensile load of 10 kN is applied at the free end (x=1). The axial displacement of the free end is _______ mm.Correct answer is between '1.70,1.72'. Can you explain this answer?.
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