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topic 5 forces
required practicals
hookes law rp
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skye andrew
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Cards (20)
What equipment is used to investigate the relationship between force and extension for a spring?
Clamp
stand
,
bosses
,
clamps
,
meter
rule
,
spring
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Why is a heavy weight placed on the clamp stand?
To stop it
falling
over
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Why is it important for the meter rule to be vertical?
Otherwise,
the readings will be
inaccurate
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What is attached to the bottom of the spring to act as a pointer?
A
wooden
splint
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Why must the pointer be horizontal?
Again the readings will be
inaccurate
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In the experiment, how is force applied to the spring?
By hanging
weights
on the spring
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What is the length of the spring with no force attached called?
The
unstretched
length
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In the experiment, how much weight is added each time?
One
Newton
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How is the extension produced by adding each weight calculated?
Subtract
unstretched
length from each reading
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What is plotted against weight on the graph?
The
extension
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How is the spring used to work out the weight of a mystery object?
Measure
extension
, then read weight from graph
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What does a straight line graph through the origin indicate about the relationship between extension and weight?
Directly proportional
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What kind of relationship is shown when the extension is directly proportional to the weight?
A
linear relationship
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What type of relationship is observed when using a rubber band instead of a spring?
Nonlinear relationship
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What happens to the spring when the weight is removed, demonstrating its elasticity?
Extension
returns to
zero
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What happens if too much weight is added to the spring?
The graph becomes
nonlinear
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What is it called when a spring is overstretched and does not return to its original length?
Inelastic deformation
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What is exceeded when a spring is overstretched?
The
limit of proportionality
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How can the spring constant be determined from the linear part of the graph?
Dividing the
force
by the extension
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What is true about the spring constant if the limit of proportionality is not exceeded?
It will be the same for
any part of the graph
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