Hooke's Law
An Investigation into Hooke's Law
Planning
The aim of this experiment is to find out if the amount of weight applied to an elastic or stretchable object is proportional to the amount the object's length increases by when the weight is applied.
Since Hooke's law is famous, and is used a lot, I have many resources and researchable information available to use. I took this from a website; http://www.efunda.com/formulae/solid_mechanics/mat_mechanics/hooke.cfm
"Robert Hooke, who in 1676 stated,
The power (Sic.) of any springy body is in the same proportion with the extension.
He announced the birth of elasticity. Hooke's statement expressed mathematically is,
[IMAGE]
where F is the applied force (and not the power, as Hooke mistakenly suggested), u is the deformation of the elastic body subjected to the force F, and k is the spring constant (i.e. the ratio of previous two parameters)." The equation will be very useful in calculating the change in size, and for preparing my hypothesis. I took this from http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0021767.html. Elasticity (physics)
In physics, the ability of a solid to recover its shape once deforming forces (stresses modifying its dimensions or shape) are removed. An elastic material obeys Hooke's law, which states that its deformation is proportional to the applied stress up to a certain point, called the elastic limit, beyond which additional stress will deform it permanently. Elastic materials include metals and rubber. However, all materials have some degree of elasticity.
This was taken from the text book issued to me from my school:
" The extension is directly proportional to the load.
This is called Hooke's Law. This law also applies to the stretching of metal wires and bars.
From your results, plot a graph of extension against load.
[IMAGE]
A straight line through the origin of the graph
Planning
The aim of this experiment is to find out if the amount of weight applied to an elastic or stretchable object is proportional to the amount the object's length increases by when the weight is applied.
Since Hooke's law is famous, and is used a lot, I have many resources and researchable information available to use. I took this from a website; http://www.efunda.com/formulae/solid_mechanics/mat_mechanics/hooke.cfm
"Robert Hooke, who in 1676 stated,
The power (Sic.) of any springy body is in the same proportion with the extension.
He announced the birth of elasticity. Hooke's statement expressed mathematically is,
[IMAGE]
where F is the applied force (and not the power, as Hooke mistakenly suggested), u is the deformation of the elastic body subjected to the force F, and k is the spring constant (i.e. the ratio of previous two parameters)." The equation will be very useful in calculating the change in size, and for preparing my hypothesis. I took this from http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0021767.html. Elasticity (physics)
In physics, the ability of a solid to recover its shape once deforming forces (stresses modifying its dimensions or shape) are removed. An elastic material obeys Hooke's law, which states that its deformation is proportional to the applied stress up to a certain point, called the elastic limit, beyond which additional stress will deform it permanently. Elastic materials include metals and rubber. However, all materials have some degree of elasticity.
This was taken from the text book issued to me from my school:
" The extension is directly proportional to the load.
This is called Hooke's Law. This law also applies to the stretching of metal wires and bars.
From your results, plot a graph of extension against load.
[IMAGE]
A straight line through the origin of the graph