Experimental Verification of Hooke's Law

Vocabulary flashcards covering Hooke's law, spring constants, extension calculations, elastic limits, plastic deformation, and experimental methods based on physics practical lecture notes.

Hooke's Law

A physics law stating that, provided the elastic limit is not exceeded, the extension in an elastic material is directly proportional to the load or applied force ($F = k e$).

Spring Constant ($k$)

A measure of the stiffness of a spring, calculated as force divided by extension ($k = \frac{F}{e}$), which corresponds to the slope of a force-extension graph.

Extension ($e$)

The displacement or change in length of a spring from its equilibrium position, calculated by subtracting the initial unstretched length from the loaded length.

Elastic Limit

The maximum stress or force that a material can endure without undergoing permanent deformation.

Elastic Behavior

The property of a material where it returns to its original shape and size once an applied stretching, compressing, or twisting force is removed within its elastic limit.

Plastic Region

The region entered when an applied force exceeds the elastic limit, causing the internal atomic structure of a material to shift permanently and result in permanent distortion.

Applied Force Calculation

The force exerted on a suspended spring by an attached mass, calculated using the equation $\text{Weight} = \text{mass} \times \text{acceleration due to gravity}$.

Line of Best Fit

A single straight line drawn with a ruler through as many data points as possible on a force-extension graph, representing the linear relationship between force and extension.

Hooke's Law Experimental Setup

An experimental arrangement where one end of a spring is attached to a clamp stand hanging vertically alongside a ruler to measure initial length and loaded extensions.

Proportional Spring Extension

The relationship demonstrated when a spring displacement increases proportionally from $x$ to $2x$ as double the load is applied.

Elastic Limit on Force-Extension Graph

The boundary point on a force versus extension graph marking the end of the straight line, beyond which the spring exceeds its elastic limit and the graph becomes shallower.