Changes

: [[Object]]s are '''deformed''' by the action of a pair of [[Equilibrium Forces]].: These [[Equilibrium Forces|equilibrium forces]] are equal in size 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 Deformation|plastically]] which means they stay in their new shape after the [[force]]sare gone.: Two Some [[object]]s '''deform''' [[Elastic Deformation|elastically]] which means they will return to their original shape when the [[force]]s must be are gone. ==Key Stage 4=====Meaning===[[Deformation]] is to change the shape of an [[object]] by applying a pair of [[Equilibrium Forces|equilibrium forces]]. ===About Deformation===: [[Equilibrium Forces|Equilibrium forces]] are equal in [[magnitude]] but opposite in direction acting in at different directions on 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)Inelastic Deformation|plasticallyinelastically]] 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.  ===References=======AQA==== :[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Deformation; elastic, pages 176-7, GCSE Physics; Student Book, Collins, AQA '']:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Deformation; plastic, pages 176-7, GCSE Physics; Student Book, Collins, AQA '']