Mechanical Engineering Flashcards
(10 cards)
1
Q
What is the formula for stress?
A
Stress = Force / Area (σ = F/A)
2
Q
What is the formula for strain?
A
Strain = Extension / Original Length (ε = ΔL/L)
3
Q
What is Hooke’s Law?
A
Force = Spring Constant × Extension (F = kx)
4
Q
What is the principle of moments?
A
Sum of clockwise moments = sum of anticlockwise moments (for equilibrium)
5
Q
What is the formula for moment?
A
Moment = Force × Perpendicular Distance (M = F × d)
6
Q
What are the conditions for equilibrium in a structure?
A
ΣForces = 0, ΣMoments = 0
7
Q
What is the formula for kinetic energy?
A
KE = ½mv²
8
Q
What is the formula for potential energy?
A
PE = mgh
9
Q
What is the formula for power?
A
Power = Work / Time or Power = Force × Velocity
10
Q
What is Young’s Modulus?
A
Young’s Modulus = Stress / Strain (E = σ/ε)
