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If the rigid rod fitted snugly between the supports as shown in the figure below, is heated, the stress induced in it due to 20℃ rise in temperature will be (α = 12.5 x 10-6/℃ E = 200GPa)
  • a)
    0.07945 MPa
  • b)
    −0.07945 MPa
  • c)
    −0.03972 MPa
  • d)
    0.03972 MPa
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
If the rigid rod fitted snugly between the supports as shown in the f...
Expansion of rod due to temperature rise δ = α∆tL
= 12.5 x 10−6 x 20 x 0.5
= 1.25 x 10−4m
Force induced by the spring due to compression
F = kδ = 50 x 103 x 1.25 x 10−4 = 6.25 N
This stress is compressive for the bar,
∴ Stress = −0.07945 MPa
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Most Upvoted Answer
If the rigid rod fitted snugly between the supports as shown in the f...
Expansion of rod due to temperature rise δ = α∆tL
= 12.5 x 10−6 x 20 x 0.5
= 1.25 x 10−4m
Force induced by the spring due to compression
F = kδ = 50 x 103 x 1.25 x 10−4 = 6.25 N
This stress is compressive for the bar,
∴ Stress = −0.07945 MPa
Free Test
Community Answer
If the rigid rod fitted snugly between the supports as shown in the f...
Expansion of rod due to temperature rise δ = α∆tL
= 12.5 x 10−6 x 20 x 0.5
= 1.25 x 10−4m
Force induced by the spring due to compression
F = kδ = 50 x 103 x 1.25 x 10−4 = 6.25 N
This stress is compressive for the bar,
∴ Stress = −0.07945 MPa
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Question Description
If the rigid rod fitted snugly between the supports as shown in the figure below, is heated, the stress induced in it due to 20℃ rise in temperature will be (α = 12.5 x 10-6/℃ E = 200GPa)a) 0.07945 MPab) −0.07945 MPac) −0.03972 MPad) 0.03972 MPaCorrect answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about If the rigid rod fitted snugly between the supports as shown in the figure below, is heated, the stress induced in it due to 20℃ rise in temperature will be (α = 12.5 x 10-6/℃ E = 200GPa)a) 0.07945 MPab) −0.07945 MPac) −0.03972 MPad) 0.03972 MPaCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If the rigid rod fitted snugly between the supports as shown in the figure below, is heated, the stress induced in it due to 20℃ rise in temperature will be (α = 12.5 x 10-6/℃ E = 200GPa)a) 0.07945 MPab) −0.07945 MPac) −0.03972 MPad) 0.03972 MPaCorrect answer is option 'B'. Can you explain this answer?.
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