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This quiz contains 14 questions from a mix of 1 subtopics.
What happens when a spring is stretched beyond its elastic limit?
it undergoes plastic deformation
it obeys Hooke's law
it breaks
its temperature increases
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In an experiment to verify Hooke's law, which graph would show a linear relationship?
force vs extension
extension vs density
force vs acceleration
temperature vs thermal conductivity
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Which statement describes elastic deformation?
the material returns to its original shape when the force is removed
the material does not return to its original shape when the force is removed
the relative positions of atoms change permanently
the atoms move apart but do not return to equilibrium positions
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What is measured to calculate the extension of a spring in an experiment?
final length - original length
final length + original length
final length x original length
final length / original length
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What happens when springs are arranged in parallel?
the total extension increases
the total extension decreases
the total spring constant increases
the total spring constant decreases
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What happens when a spring is compressed rather than stretched?
plastic deformation occurs
the extension becomes negative
hooke's law no longer applies
the spring constant changes
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Which materials obey Hooke's law?
all metals
only rubber bands
only springs
all elastic materials
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What causes plastic deformation in materials?
temporary changes in atomic positions
changes in acceleration
permanent changes in atomic positions
changes in thermal energy
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What is the proportionality constant in Hooke's law called?
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What type of deformation involves a material returning to its original shape?
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Give two differences between elastic and plastic deformation.
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A student conducts an experiment to verify Hooke's Law by attaching weights to a spring. If a weight of 5 N causes the spring to extend by 0.02 m, what is the spring constant of the spring?
200 N m-1
100 N m-1
250 N m-1
50 N m-1
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Calculate the equivalent spring constant for two springs arranged in parallel, where the first spring has a constant of 200 N/m and the second has a constant of 300 N/m.
250 N m-1
150 N m-1
100 N m-1
500 N m-1
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A spring with a spring constant of 150 N m-1 is stretched by 0.05 m. Calculate the force applied to the spring.
2.5 N
3.6 N
10 N
7.5 N
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