1
Q
longitudinal strain
A
Δl/l
2
Q
volume strain
A
Δv/v
3
Q
stress
A
e*strain
4
Q
tensile stress
A
f/a
5
Q
y youngs modulus
A
normal stress/stress
normal stress= f/a
stress = Δl/l
6
Q
b bulk modulus
A
normla stress/voloume stress
7
Q
elastic potential energy
A
stress* strain/2
y*strain^2/2
shm and elasticity
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