Name of the student
Yuuvraaj Jain
Name of your teacher
Ms Muthulekshmi Rajendran
IA topic
Relationship between the temperature of a body and the force of friction
experienced by it.
Background theory related your topic
This experiment will revolve around newton’s second law, F=ma. The force
exerted by the weights will be given by 𝑓𝑤 =𝑚𝑤 a; where the acceleration of the
weights will be equal to acceleration due to gravity. The net force experienced
by the rubber block will be given by 𝑓𝑟𝑏 = 𝑚𝑟𝑏 𝑎𝑟𝑏 ; where the acceleration of
the rubber block will be found using the photogates and timer. The force of
friction will be given by 𝑓𝑓 = 𝑓𝑤 − 𝑓𝑟𝑏 .
Research question (The RQ should contain one independent
variable and one dependent variable. It should be sharply focussed
question)
How does the force of friction of a sliding rubber body vary with its
temperature?
Materials needed for experiment
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Identical rubber blocks (2 to 3)
Weights
String
Pulley
Photo gate sensor
Stopwatch
Measuring Scale or Measuring tape
Freezer (to cool the rubber blocks)
Bunsen Burner (To heat the rubber blocks)
Beaker (To boil water, so that the rubber blocks can be heated)
Thermometer
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Weighing scale
Brief outline of procedure to be used for investigation
1) The rubber block will be heated/cooled to the required temperature.
2) The rubber block will be tied to a string and placed on a flat surface.
3) The string will be placed on a pulley and on its other end weights will be
added.
4) The Photogate sensors will be placed.
5) The timer will be started, and the weights will be dropped.
6) When the rubber block passes the second photogate sensor, the timer
will be stopped.
Please upload the schematic diagram of your experimental set up