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Hook’s Law
Hooke’s Law ,[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],How different materials behave
Elastic and wire ,[object Object]
How does a spring behave? ,[object Object],[object Object]
Extension = present length – original length ,[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],  single spring  Equilibrium length  __________m   Total Hanging Mass  (g) Total Hanging Mass (kg) Total force (mg)   g= 10 N/kg Stretched length (m) Extension (m) 100        200        300        400        500        600        700        800        900        1000 1600      
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Force (N) Extension (m)
Hooke’s Law ,[object Object],[object Object],[object Object],[object Object]
Elastic Limit ,[object Object],[object Object],Elastic limit Elastic behaviour Plastic behaviour
Repeat the experiment using an elastic ,[object Object],[object Object]
Class Experiment – Stretching a wire – Vernier Scale ,[object Object]
Elastic and wire ,[object Object],[object Object],[object Object],copper rubber F F e e
Hysteresis rubber F ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The End ,[object Object]

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Hook's law