BVIS HANOI (VV)

Spring constant: when obeying Hooke's Law: F ∝ x => F = kx ( k is the spring constant with unit Nm^-1) => k = F/x

 

Limit of proportionality: The point where F is no longer proportional to the extension (Brittle material breaks before any plastic deformation => never reach an elastic limit)

 

Elastic Limit: where the deformation becomes plastic

 

Yield Point: The point at which where the material extends even without additional force. It will not contract at all when the force is removed. This is whee the plastic flow begins ( generally, the yield point is where the graph passes the horizintal)