Hooke's Law Application
In the application of Hooke's law is very closely related to objects whose working principle uses springs and elastic ones. Hooke's legal principle has been applied to some of the following items.
Microscope whose function is to see tiny microorganisms that can not be seen by the naked eye
Telescope whose function is to see objects that are located far away so that it looks close, like an object in space
Gauges measuring the acceleration of Earth's gravity
A watch that uses a peer as a timer
The gauze or chronometer used to determine the line or position of the ship in the sea
Connection sticks gear shift vehicles both motorcycles and cars
Spring swing
Some of the items mentioned above have an important role in human life. In other words, Hooke's idea had a positive impact on the quality of life of the maunsia.
Sounds of Hooke's Law
Hooke's law states that the magnitude of the force acting on an object is proportional to the increase in the length of the object. Of course this applies to elastic differences (can stretch).
F = k. x
Information :
F = force acting on the spring (N)
k = spring constant (N / m)
x = increase in spring length (m)
Hooke's Law Formula
Magnitudes and Formulas in Hooke's Law and Elasticity
1. Voltage
Voltage is a condition where an object experiences a long increase when an object is exerted force on one end while the other end is held. Example. a piece of wire with a cross-sectional area of x m2, with an initial length of x meters drawn
with a force of N at one end while at the other end being held the wire will increase in length by x meters. This phenomenon describes a voltage which in physics is symbolized by σ and can be written mathematically as follows.
Information:
F = Force (N)
A = Cross-sectional area (m2)
σ = Voltage (N / m2 or Pa)
2. Strain
Strain is a ratio between the length of the wire in x meters and the initial length of the wire in x meters. This strain can occur because the force applied to the object or the wire is removed, so that the wire returns to its original shape.
This relationship can be written mathematically as follows:
Information:
e = strain
ΔL = Increase in length (m)
Lo = Initial length (m)
In accordance with the above equation, strain (e) has no units due to the increase in length (ΔL) and initial length (Lo) are quantities with the same unit.
3. Modulus of Elasticity (Modulus Young)
In physics, the modulus of elasticity is symbolized by E. The modulus of elasticity describes a ratio between stress and strain experienced by a material. In other words, elastic modulus is proportional to stress and inversely proportional to strain.
Information:
E = Modulus of elasticity (N / m)
e = strain
σ = Voltage (N / m2 or Pa)
4. Compression
Compression is a state that is almost similar to strain. The difference lies in the direction of movement of the molecule after being applied to the force. Unlike the case in a strain where the object molecules will be pushed out after being given a force. In compression, after being given a force, the object's molecules will be pushed in (compress).
5. Relationship Between Tensile Strength and Modulus of Elasticity
When written mathematically, the relationship between attraction and modulus of elasticity includes:
Information:
F = Force (N)
E = Modulus of elasticity (N / m)
e = strain
σ = Voltage (N / m2 or Pa)
A = Cross-sectional area (m2)
E = Modulus of elasticity (N / m)
ΔL = Increase in length (m)
Lo = Initial length (m)