Convert the following to appropriate SI units:
- (a) A length, l = 5 ft.
- (b) A stress, σ = 90 kpsi.
- (c) A pressure, p = 25 psi.
- (d) A section modulus. Z = 12 in3.
- (e) A unit weight, w = 0.208 Ibf/in.
- (f) A deflection. δ = 0.001 89 in.
- (g) A velocity, v = 1 200 ft/min.
- (h) A unit strain. ∈ = 0.002 15 in/in.
- (i) A volume. V = 1830 in3.
(a)
The length in
Answer to Problem 30P
The length in
Explanation of Solution
Write the expression for length.
Here, the length in
Write the expression for conversion factor.
Conclusion:
Substitute
Substitute
Thus, the length in
(b)
The stress in
Answer to Problem 30P
The stress in
Explanation of Solution
Write the expression for stress.
Here, the stress in
Write the expression for conversion factor.
Conclusion:
Substitute
Substitute
Thus, the stress in
(c)
The pressure in
Answer to Problem 30P
The pressure in
Explanation of Solution
Write the expression for pressure.
Here, the pressure in
Write the expression for conversion factor.
Conclusion:
Substitute
Substitute
Thus, pressure in
(d)
The section modulus in
Answer to Problem 30P
The section modulus in
Explanation of Solution
Write the expression for section modulus.
Here, the section modulus in
Write the expression for conversion factor.
Conclusion:
Substitute
Substitute
Thus, the section modulus in
(e)
The unit weight in
Answer to Problem 30P
The unit weight in
Explanation of Solution
Write the expression for unit weight.
Here, the unit weight in
Write the expression for conversion factor.
Conclusion:
Substitute
Substitute
Thus, the unit weight in
(f)
The deflection in
Answer to Problem 30P
The deflection in
Explanation of Solution
Write the expression for deflection.
Here, the deflection in
Write the expression for conversion factor.
Conclusion:
Substitute
Substitute
Thus, the deflection in
(g)
The velocity in
Answer to Problem 30P
The velocity in
Explanation of Solution
Write the expression for velocity.
Here, the velocity in
Write the expression for conversion factor.
Conclusion:
Substitute
Substitute
Thus, the velocity in
(h)
The unit strain in
Answer to Problem 30P
The unit strain in
Explanation of Solution
Write the expression for unit strain.
Here, the unit strain in
Write the expression for conversion factor.
Conclusion:
Substitute
Substitute
Thus, the unit strain in
(i)
The volume in
Answer to Problem 30P
The volume in
Explanation of Solution
Write the expression for volume.
Here, the volume in
Write the expression for conversion factor.
Conclusion:
Substitute
Substitute
Thus, the volume in
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Chapter 1 Solutions
Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
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