Springs
This task is about identifying patterns in data.
Tracey had been investigating how much a spring stretched when various masses were attached to it.
Here are the results of her investigation:
Mass (g)
Length of stretch (mm)
50
100
150
200
20
40
60
80
She graphed her results like this:
Question
2
Change answer
a) Use the graph to work out the length of stretch for
a) Use the graph to work out the length of stretch for
i) 60 g
mm
ii) 160 g
mm
Question
2
Change answer
b) What is the mass if the stretch is 45 mm?
g
Question
c) There is a simple relationship between mass and stretch. What is the relationship?
stretch = 0.4 × mass
mass = 0.4 × stretch
stretch = 20 + mass
mass = 20 + stretch
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