Springs Flashcards
1
Q
What is the symbol and units for spring constant?
A
symbol = k units = N/m
2
Q
What is the equation for Hooke’s Law?
A
F = k/\L /\L = extension
3
Q
What happens to spring constant when springs are in series?
A
Total spring constant is less than individual ones
1/k1 + 1/k2 … = 1/k
4
Q
What happens to spring constant when springs are in parallel?
A
Total spring constant is more than individual ones
k1 + k2 … = k
5
Q
What is Elastic Strain energy?
A
Stretched spring stores potential energy.
Energy stored= work done in stretching
Force x Distance
F is given by Hookes Law
6
Q
What does the area under a F/\L graph show?
A
Work = 1/2F/\L = energy = Ep =1/2k/\L^2
