Force Exerted by Contracting or Stretching a Material
Any strain exerted on a material causes an internal elastic stress. The force applied on a material when contracting or stretching is related to how much the length of the object changes.
Force Exerted by Contracting or Stretching a Material formula |
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\( F = \lambda \; A \; l_c \;/\; l_o \) (Force Exerted by Contracting or Stretching a Material) \( \lambda = F \; l_o \;/\; A \; l_c \) \( A = F \; l_o \;/\; \lambda \; l_c \) \( l_c = F \; l_o \;/\; \lambda \; A \) \( l_o = \lambda \; A \; l_c \;/\; F \) |
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| Symbol | English | Metric |
| \( F \) = force exerted | \(lbf\) | \(N\) |
| \( \lambda \) (Greek symbol lambda) = modulus of elasticity | \(lbf\;/\;in^2\) | \(Pa\) |
| \( A \) = origional area cross-section through which the force is applied | \(ft^2\) | \(m^2\) |
| \( l_c \) = change in length | \(ft\) | \(m\) |
| \( l_o \) = origional length | \(ft\) | \(m\) |
Tags: Spring