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explain the relationship between the force applied and the extension of an elastic object
the extension is directly proportional to the force applied, provided that the limit of proportionality is not exceeded
what is meant by an inelastic (plastic) deformation?
a deformation which results in the object being permanently stretched
the object doesn’t return to its original shape when the force is removed
state the equation relating force, spring constant and extension. give units
force = spring constant x extension
force(N), spring constant(N/m), extension(m)
what type of energy is stored in a spring when it is stretched?
elastic potential energy
what can extension be replaced with in the equation for spring force?
compression