Mechanics of Materials Complete Step-by-Step Answers for All Chapters Comprehensive Test Bank for Student Success Exam Ready Version | UPDATED ACTUAL Exam Questions and CORRECT Answers

Mechanics of Materials Complete Step-by-Step Answers for All
Chapters Comprehensive Test Bank for Student Success Exam
Ready Version | UPDATED ACTUAL Exam Questions and
CORRECT Answers

Question 1.
Hookes Law for Normal .

Answer: σ = Eε


Question 2.
Stress Equation .

Answer: σ=F/A


Question 3.
Extensional Strain .

Answer: ε = ∆L/L₀
ε = (Lf-L₀) / L₀
tensile strain: the bar gets longer, ∆L>0
compressive strain: the bar gets shorter, ∆L<0
DIMENSIONLESS


Question 4.
Roller Support Reaction .

Answer: Ay


Question 5.
Pin Support Reaction .

Answer: Ax,Ay


Question 6.
Stress definiition .

Answer: intensity of force, force per unit area
pounds per square in (lb/in²) = psi
newtons per meter squared (N/m²) = pascal
‣ kilo (k) . Answer: 1000 (10³) grams


Question 7.
mega (M) .

, Answer: 1,000,000 (10⁶) grams


Question 8.
giga (G) .

Answer: 1,000,000,000 (10⁹) grams


Question 9.
milli (m) .

Answer: 0.001 (10⁻³) grams


Question 10.
micro (μ) .

Answer: .000001 (10⁻⁶) grams


Question 11.
nano (n) .

Answer: .000000001 (10⁻⁹) grams


Question 12.
kip = .

Answer: 1,000 lbs


Question 13.
psi = ? ksi .

Answer: 1 psi = .001 ksi
1000 psi = 1 ksi


Question 14.
axial normal stress .

Answer: force resultant is perpendicular to the plane


Question 15.
round cross-sectional area .

Answer: (π/4)(d)²