FORCES AND ELASTICITY
might have to pause on parts because of time restraint
A force acting on an object may cause a change in the shape of the object
An elastic object such as a spring stores elastic potential energy when stretched or squashed. The extension of an elastic object is directly proportional to the force applied.
A force applied to an elastic object such as a spring will result in the object stretching and storing elastic potential engergy
Elastic objects can also store elastic potential energy when they are squashed. For example, this happens when a squash ball is dropped onto a hard surface.
For an object that is able to recover its original shape, elastic potential energy is stored in the object when work is done on the object to change its shape.
The extension of an elastic object is directly proportional to the force applied, proportional to the force applied, provided that the limit of proportionality is not exceeded
F= k x e
F is force in newtons, N
k is the spring constant in newtons per metre, N/m
e is the xtension in metres, m