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→About Deformation
: [[Object]]s are '''deformed''' by the action of a pair of [[Equilibrium Forces]].
: These [[Equilibrium Forces|equilibrium forces]] are equal in [[magnitude]] but opposite in direction acting at different ends of an [[object]] to '''deform''' it. If there is only one [[force]] then the [[object]] will not '''deform''' it will just [[accelerate]].
: Some [[object]]s '''deform''' [[Plastic (Property)Deformation|plastically]] which means they stay in their new shape after the [[force]]s are gone.: Some [[object]]s '''deform''' [[ElasticDeformation|elastically]] which means they will return to their original shape when the [[force]]s are gone.