Bar A has a cross-sectional area of 0.04 m2, modulus of elasticity E = 70 GPa, and coefficient of thermal expansion α = 14E‐6 C-1. Bar B has a cross sectional area of 0.01 m2, modulus of elasticity E = 120 GPa, and coefficient of thermal expansion α = 16E‐6 C-1. There is a gap b = 0.4 mm between the ends of the bars. What minimum increase in the temperature of the bars above their initial temperature T is necessary to cause them to come into contact?
Bar A has a cross-sectional area of 0.04 m2, modulus of elasticity E = 70 GPa, and coefficient of thermal expansion α = 14E‐6 C-1. Bar B has a cross sectional area of 0.01 m2, modulus of elasticity E = 120 GPa, and coefficient of thermal expansion α = 16E‐6 C-1. There is a gap b = 0.4 mm between the ends of the bars. What minimum increase in the temperature of the bars above their initial temperature T is necessary to cause them to come into contact?
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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Bar A has a cross-sectional area of 0.04 m2, modulus of elasticity E = 70 GPa, and coefficient of thermal expansion α = 14E‐6 C-1. Bar B has a cross sectional area of 0.01 m2, modulus of elasticity E = 120 GPa, and coefficient of thermal expansion α = 16E‐6 C-1. There is a gap b = 0.4 mm between the ends of the bars. What minimum increase in the temperature of the bars above their initial temperature T is necessary to cause them to come into contact?
Transcribed Image Text:The image shows a diagram illustrating two blocks, labeled A and B, separated by a small distance.
- **Block A** is on the left side and approximately 1 meter in length.
- **Block B** is on the right side, also approximately 1 meter in length.
- The gap between Block A and Block B is labeled **b**.
This diagram likely represents a physics or engineering concept, possibly related to interference, wave propagation, or structural analysis. The separation **b** between the blocks could be a critical parameter in the study, used to observe how different conditions affect the system.
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