Hooke’s Law.

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Presentation transcript:

Hooke’s Law

Learning objectives Investigate the effect of adding masses to springs Deduce Hooke’s law regarding the effect of weight on the length of springs Determine the weight of different masses on earth Determine an unknown value from a graph

What to do…. Measure the length

Results…. Mass (g) Weight (N) Length (mm) Extension (mm) 50 100 150 50 100 150 200 250 300 350 400 450 500

Plot a graph Decide what goes on the vertical axis Write a conclusion from the graph Weight (N)

Extension! Repeat with a rubber band!

Hooke’s Law! Elastic limit is exceeded! The extension of the spring is PROPORTIONAL to the weight. This means that doubling the weight will double the extension.