P15 - Forces and Matter

• stretching bending and compressing require more than one force
• an elastic object that will return to its original shape when the force is removed
• equation for linear elastic distortion is F=K*E
• units of spring constant are n/m
• Extension = final length - initial length
• an inelastic object will keep its new shape after forces are removed
• the gradient of a force-extension graph is the spring constant
• the area under the graph of a force-extension graph is the elastic potential energy