A bronze bar 3 m long with a cross sectional area of 320 mm² is placed between two rigid walls as shown in the figure. At a temperature of -20°C, the gap A = 2.5 mm. Find the temperature at which the compressive stress in the bar will be 35 MPa. Use a = 18.0 x 10-6 m/(m °C) and E = 80 GPa. OLT=70.6°C OILT=30.6°C ○ III.7=90.6°C ONT=50.6°C L=3m

A bronze bar 3 m long with a cross sectional area of 320 mm² is placed between two rigid walls as shown in the figure. At a temperature of -20°C, the gap A = 2.5 mm. Find the temperature at which the compressive stress in the bar will be 35 MPa. Use a = 18.0 x 10-6 m/(m °C) and E = 80 GPa. OLT=70.6°C OILT=30.6°C ○ III.7=90.6°C ONT=50.6°C L=3m

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Concept explainers

Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.

Question

A bronze bar 3 m long with a cross sectional area of 320 mm² is placed between two rigid walls as shown in the figure. At a temperature of -20°C, the gap A = 2.5 mm. Find the temperature at
which the compressive stress in the bar will be 35 MPa. Use a = 18.0 x 10-6 m/(m-°C) and E = 80 GPa.
OLT=70.6°C
OILT 30.6°C
OT-90.6°C
ONT=50.6°C
L=3m

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