1.
Hooke’s Law
And The
Elastic Behaviour of
Springs.

2.
Mass On A Spring
Learning Intention
We are learning about how:
i.
i.
To measure, record and
describe the relationship
between extension of an
elastic object (i.e spring)
and the force applied.
To use data to plot a graph
and calculate the spring
constant k.
Keywords
and
Phrases
Starter Activity
You have 4 minutes to draw a sketch
of how you will set up the equipment
to find how the stretch of a spring
changes with mass
Object
Force
Data
Spring
Extension
Elastic
Constant
Relationship

3.
Helping you investigate!
Before you start your practical work, think
about:
i. How you can make your test fair?
ii. How you can make your test safe?
iii. Can you predict what will happen?
iv. Can you explain your prediction?
v. How many observations or measurements
will you make?
vi. What range of values will give a suitable
result?
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4.
Draw a sketch of how you will set up
the equipment to find how the stretch
of a spring changes with mass
What is the
independent variable?
What is the
dependent variable?
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5.
Explore
i. Should you try out some
tests to check your ideas
before writing down your
final plan?
ii. How will you record your
results clearly and
accurately?
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6.
Research
i. Hooke's Law
ii. How to calculate
Spring constant
Due: Next lesson (Students to copy
homework into their planners)

7.
Practical Activity
Elastic Behaviour!
Mass on a spring to be carried
next lesson.

8.
Must be able to…
Record results in a table
Should be able to…
Take accurate measurements of stretch
Could be able to…
Plot a graph of results

9.
Carry out the experiment,
and record your results in a
table
Independent Variable
Mass in g
No more than 700g!
Dependent Variable
Stretch of spring in cm

10.
1. How did you make your measurements
accurate?
2. What is the relationship between
stretch of the spring and mass?
3. How could you use this equipment to
find the mass of your pencil case?

11.
What graph could you use to show your
results? Can your result be shown on a
bar chart or a line graph?
What are the steps needed to
draw a line graph?
Plot a graph of your results. Can
you see a pattern in your results?
Does your result support your
prediction?

12.
Calculating your gradient
What is spring
constant?
Can you calculate
spring constant from
your graph?
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13.
Can you comment on any improvements
you could make to:
i. the way you did your test
ii. the reliability of your result
Can you suggest any further work
to extend your investigation?

14.
Learning Journal
15/12/2013
1.
2.
3.

15.
Draw a line under last lesson’s work and write
today’s title in your book...
c/w
15/12/2013
How does stretch of a
spring change with mass?

16.
===END ===
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