6.4 Plot extension/ load graphs and describe its experimental procedure.
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6.6 Interpret extension/load graphs.•show on the graphs: axes label( scale, unit, quantity), obvious points and best fit line.
k: stifness it tells how hard or easy to it is to streatch a spring. Its measured in N/m, N/mm or N/cm. Stifness SI unit is N/m 6.7 Recognise the significance of the term ‘limit of proportionality’ for an extension/load graph. • K(large): Stiff spring (Hard to extend or compress) K(small): Soft spring (easy to extend or compress) • Apply Hook's law on series and parallel connections of two identical springs. Determine the combined stiffness. |