forces and elasticity

• elasticity involves

  stretching

  bending

  compressing
• the extension of an elastic object is directly proportional to what provided that the limit of proportionality is not exceeded

  force applied
• equation for force

  spring constant x extension
• force measured in

  newtons
• spring constant measured in

  n/m
• extension measured in

  metres
• where is elastic potential energy stored

  spring
• if the spring is not inelastically deformed what is equal

  work done on spring and elastic potential energy stored
• how to work out elastic potential energy

  0.5 x spring constant x extension *2
• what is an elastic material

  return to original shape if forces acting on them are removed
• elastic deformation

  to happen more then one force must be applied
• what is an inelastic material

  dont return to original length or shape when forces are removed
• example of inelastic material

  certain polymers