English National Curriculum - Science
Mission Objectives
Define limit of proportionality and elasticity
Apply Hooke’s law to calculate the extension of a spring
Interpret and describe force-extension graphs
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Words and meanings to learn
elastic
a material or object’s ability to return to its original shape after the force causing its deformation is removed
inelastic
a material or object that does not return to its original shape or size after the force causing deformation is removed
extension
the increase in length of a material or object when a force is applied to it
limit of proportionality
the point beyond which Hooke’s Law is no longer obeyed
Hooke's Law
states that the extension of a spring (or other elastic object) is directly proportional to the force applied to it, provided the limit of proportionality is not exceeded
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Handouts
Practical: spring, ruler, 5N weight stack, clamp stand, heavy weight and a newton metre.
Expert film
Mission assignment film
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