قانون ِ هوک qânun-e Hooke (#)
*Fr.: loi de Hooke*
The law stating that if a body is deformed the → *strain*
produced is directly proportional to the applied → *stress*.
If the elastic limit is not exceeded, the material returns to its original shape and
size on the removal of the stress. Hooke's law forms the basis of the theory of
→ *elasticity*.
More specifically, within certain limits, the force required to stretch an elastic
object such as a metal spring is directly proportional to the extension of
the spring. It is commonly written: *F = -kx*,
where *F* is the force, *x* is the length of extension/compression and
*k* is a constant of proportionality known as the spring constant. Named after Robert Hooke (1635-1703), British scientist who described the
relationship in 1676; → *law*. |