Therefore, in order to verify Hooke’s Law, you must verify that the force F and the distance at which the spring is stretched are proportional to each other (that just means linearly dependent on each other), and that the constant of proportionality is k.
What is Hooke’s Law lab?
The law stated that the stretching of a spring was proportional to the amount of weight (force) applied to the spring. This relationship would hold true until the spring reached its elastic limit, at which point it would become permanently distorted.
What is Hooke’s Law in physics?
Hooke’s law, law of elasticity discovered by the English scientist Robert Hooke in 1660, which states that, for relatively small deformations of an object, the displacement or size of the deformation is directly proportional to the deforming force or load.
What is Hooke’s Law Grade 9?
Hooke’s law states that the strain of the material is proportional to the applied stress within the elastic limit of that material. When the elastic materials are stretched, the atoms and molecules deform until stress is applied, and when the stress is removed, they return to their initial state.
What is the objective of Hooke’s law experiment?
The main objective of this experiment is to show Hooke’s Law of spring, calculate the total energy absorbing in the spring. Measuring the stretching produced by different loads, added to the spring, tests the elasticity of a spring. When a spring is stretched by an applied force, a restoring force is produced.
What is the purpose of Hooke’s Law?
Hooke’s law also governs the limits of an object’s elasticity, a metal spring, for instance, can only stretch so far before excess force causes it to break. In engineering, Hooke’s law has a very practical purpose: to ensure that components can withstand a pre-calculated level of force.
How do you set up Hooke’s law experiment?
- Set up apparatus as shown in the diagram.
- Attach the mass hanger s -hook and pointer to the lower end of the spring.
- Read the pointer value from the metre rule.
- Add a 100g slotted mass to the hanger.
- Read the new position of the pointer on metre rule.
- Calculate the stretching force = weight of masses: W = mg.
How Hooke’s law can be verified experimentally?
Hooke’s law is for a small deformation, when the stress and strain are proportional to each other. It can be verified in a simple way by stretching a thin straight wire (stretches like spring) of length L and uniform cross-sectional area A suspended from a fixed point O.
How do you find the spring constant in an experiment?
W = kx. W is the weight of the added mass. Therefore, the spring constant k is the slope of the straight line W versus x plot. Weight is mass times the acceleration of gravity or W = mg where g is about 980 cm/sec2.
What is Hooke’s Law example?
A balloon is elastic in nature. When the air molecules are blown in it, it expands. Similarly, when it is evacuated, it shrinks in size. The expansion and compression of the balloon depend on the force with which the air is pressed into it; therefore, it works on the basis of Hooke’s law.
What is Hooke’s Law and Young’s modulus?
Hooke’s law is a fondamental rule of thumb applied on skin that describes a direct proportionality link between the force applied on an object and the induced strain. Young’s Modulus is a constant coefficient stiffness*, named k, which describes how stiff is the skin or how likely it is to deform.
Do all springs obey Hooke’s Law?
Exceptions to Hooke’s Law Variable diameter springs, like conical, convex or concave springs, can be coiled to a variety of force parameters. If the spring pitch (the space between coils) is constant, a conical spring’s force will vary non-linearly, meaning that it will not follow Hooke’s Law.
What is Hooke’s law and its limitations?
Hooke’s law :- it states that within elastic limit stress applied is proportional to Strain developed stress ∝ strainent to which a solid may be stretched without permanent alteration of. ⇒strainstress=k. k is known as modulus of elasticity. -elastic limit is a point or the maximum size and shape.
Is Hooke’s Law linear?
Hooke’s law is a linear relationship The force, called the restoring force, is positive when x is negative (spring is compressed) and negative when x is positive (spring is extended). In general, for any spring, Hooke’s law is only good over a small range of motions.
What is stress in Hooke’s Law?
There was a linear region where the force required to stretch the material was proportional to the extension of the material, known as Hooke’s Law. Hooke’s Law states that the strain of the material is proportional to the applied stress within the elastic limit of that material.
What is the constant of a spring?
The spring constant is the force needed to stretch or compress a spring, divided by the distance that the spring gets longer or shorter.
How do you find the spring constant from a force extension graph of a spring?
The gradient of the line is the spring constant, k. The gradient of the graph of force F, (y-axis), and extension e, (x-axis), is equal to the spring constant k. Hooke’s Law is obeyed up to the limit of proportionality.
How can Hooke’s law be improved?
Add a fiduciary marker to the bottom of the coil spring to prevent any error caused by not reading the ruler from eye level. Ensure the spring is not moving when taking measurements of it’s length. A fiduciary marker can be added to improve accuracy and precision of the length measurements.
What are the variables in Hooke’s law experiment?
Independent Variable is the stretching force F. This is the weight attached to the spring and is calculated using W = mg. Dependent Variable is the extension of the spring e. Control Variables are the material of the spring, and the cross section area of the spring.
What is the spring constant in Hooke’s Law?
Spring constant is a measure of the stiffness of a spring up to its limit of proportionality or elastic limit. The limit of proportionality refers to the point beyond which Hooke’s law is no longer true when stretching a material.
Why was Hooke’s law discovered?
In 1655 Hooke was employed by Robert Boyle to construct the Boylean air pump. Five years later, Hooke discovered his law of elasticity, which states that the stretching of a solid body (e.g., metal, wood) is proportional to the force applied to it.
What is the conclusion of experiment on Hooke’s Law?
CONCLUSION: From the experiment performed above, it can be concluded that the Hooke’s law holds true for a metal spring. This is because the extension produced by the spring is directly proportional to the force applied on it.
What is the conclusion of Hookes law?
Conclusions: Hooke’s Law says that the stretch of a spring is directly proportional to the applied force. (Engineers say “Stress is proportional to strain”.) In symbols, F = kx, where F is the force, x is the stretch, and k is a constant of proportionality.
How do you calculate force in Hooke’s law experiment?
How is Hooke’s Law measured?
If the spring is extended, the force exerted is proportional to the increase in length from the length of the equilibrium, as per the Hooke Law. The formula for the spring constant calculation is as follows: k = -F/x, where the spring constant is k.