Hookes law and spring constant

• Elastic and inelastic deformation are two different types of changes in shape that an object can undergo.
• Elastic deformation is when an object returns back to its original shape after the forces have been removed.
• Inelastic deformation or plastic deformation is when an object doesn't quite return to its original shape and stays deformed in some way.
• Extension is the increase in length of a spring when it's stretched.
• The spring's own mass exerts a force downwards in the form of weight, causing the natural length to be a bit shorter than the spring itself When it’s on a solid support
• The solid support exerts an equal but opposite force upwards, keeping the spring from falling down.
• The spring's extension increases proportionally as the force on it increases, which can be represented as f is proportional to e, where f is the force and e is a symbol for extension.
• The spring constant, denoted by letter k, tells us how many newtons it would take to stretch the particular object by one meter.
• The higher the spring constant, the stiffer the material because it requires more force to stretch it.For example a hosepipe would have a higher spring constant than an elevation band
• Hooke's law states that force and extension are directly proportional, represented by a straight line that passes through the origin.
• All deformation is elastic deformation, meaning that once the force is removed the object will return to its original shape.
• There is a limit to the relationship between force and extension, which is referred to as the elastic limits or the limits of proportionality.
• After the elastic limits, Hooke's law no longer applies and the object won't necessarily go back to its original shape, meaning that it would have been inelastically deformed anyway.
• Hookes law graph