What is Hookes Law 2

Hooke's law

Curriculum reference

 

Middle school6
Realschule curriculum plus(I)7
(II + III)8
high schoolCurriculumPlus8

 

Hook's law 1: parallel experiment

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Hook's Law 2: Measurement attempt

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Notes on implementation

Qualitative implementation:

The four identical springs are attached to a strip at equal intervals (adhesive tape) and weighted down with four pieces of weight in a ratio of 1: 2: 3: 4. Make sure that the lightest piece of mass hangs on the left from the student's perspective in order to get an ascending straight line. You then change the slope of the straight line until the lower edges of the masses are at the same height.
It is important that you have four identical springs, none of which has already been overstretched. Small differences can be compensated for when fastening with adhesive tape.

Quantitative implementation:

At the beginning of the experiment, the upper measuring mark must be set to the lower edge of the spring in order to be able to measure the actual deflection of the spring.

Didactic advice

Qualitative implementation:

At the end of the experiment, the elongation of the springs or their suspension points should form a straight line and the lower edge of the masses should run horizontally; this can also be clearly illustrated with a bar or another artificial reference plane (table edge or similar). The conclusion that force and deflection are proportional to one another is then figuratively obvious for pupils.

Quantitative implementation:

Quantitative implementation The spring is stretched in four even steps. It is particularly advisable to choose a suitable spring that also delivers clear measured values ‚Äč‚Äčthat show the relationship.
With the help of Hooke's law, the pupils easily learn how to use diagrams. With the help of the easy-to-obtain measurement data, the pupils learn how to evaluate data arithmetically or graphically. You recognize Hooke's law as a simple example of proportional quantities. Properties such as a straight line through the origin as a graph or the equality of quotients emerge easily.
As an exercise in interpreting diagrams, the graphs of "softer" and "harder" springs can be entered or read from a diagram.

 

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