S = Y α ( Ts - To ) Part (b) What is the value of the stress, in pascals, that develops due to a rise of temperature to 21ºC? S = 2337000 Part (c) Assuming the nails have a cross-sectional area of A = 10-5 m2 all of which is perpendicular to the stress force from the bar, what is the force acting on each due to that temperature rise?
Problem 4: A student foolishly attempts to stop a steel bar, of length L = 1 m and at a temperature of 20ºC, from thermally expanding by attaching it to a wooden support with a nail at each end. Steel's Young's modulus is Y = 1.9 × 1011 N/m2 and it's linear thermal expansion coefficient is α = 12.3 × 10-61/C.
Randomized VariablesY = 1.9 × 1011 N/m2
α = 12.3 × 10-6 1/C
I just need part C
Part (a) Enter an expression, in terms of defined variables, for the stress, S, that each nail will need to sustain at a temperature Ts.
| S = Y α ( Ts - To ) |
Part (b) What is the value of the stress, in pascals, that develops due to a rise of temperature to 21ºC?
| S = 2337000 |
Part (c) Assuming the nails have a cross-sectional area of A = 10-5 m2 all of which is perpendicular to the stress force from the bar, what is the force acting on each due to that temperature rise?
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