2. A 3-m long bronze bar with a cross-sectional area of 350 mm? is secured between two rigid walls as shown. At a temperature of 15°C, the gap A = 3 mm. Calculate the temperature at which the compressive stress developed in the bar is 30 MPa. Assume a = 18 x 106/ °C and E = 80 GPa. Answer: T, = 61.4°C L = 3 m

2. A 3-m long bronze bar with a cross-sectional area of 350 mm? is secured between two rigid walls as shown. At a temperature of 15°C, the gap A = 3 mm. Calculate the temperature at which the compressive stress developed in the bar is 30 MPa. Assume a = 18 x 106/ °C and E = 80 GPa. Answer: T, = 61.4°C L = 3 m

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.

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2. A 3-m long bronze bar with a cross-sectional area of 350 mm? is secured between two rigid walls as
shown. At a temperature of 15°C, the gap A = 3 mm. Calculate the temperature at which the compressive
stress developed in the bar is 30 MPa. Assume a = 18 x 10-6/ °C and E = 80 GPa.
Answer: T; = 61.4°C
L = 3 m

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