Mass and Inertia

1. Physics Form 4 KSSM, Experiment 2.2: Mass and Inertia
Inference Period of an oscillation of a plasticine depends on its mass.
Hypothesis The higher the mass of a plasticine, the greater its period of an oscillation.
Aim To investigate the relationship between the period of an oscillation of a
plasticine and its mass.
Variables Manipulated variable: Mass of plasticine, m
Responding variable : Period of an oscillation, T
Constant variable : Length of jigsaw blade
List of
apparatus
and materials
Jigsaw blade, G-clamp, stopwatch and plasticine balls of 20.0 g, 40.0 g, 60.0
g, 80.0 g and 100.0 g.
Arrangement
of the
apparatus
Procedure 1. Plasticine with a mass of 20.0 g is attached at the end of jigsaw blade.
2. The jigsaw blade is displaced horizontally to one side and then released
so that it oscillates. The time taken for 10 oscillations, t is recorded by a
stopwatch.
3. The period of an oscillation T =
10
t
is recorded.
4. The steps are repeated by using plasticine balls with mass m = 40.0 g,
60.0 g, 80.0 g and 100.0 g.
5. All the data are recorded and tabulated.
6. A graph of T against m is plotted.
Way to
tabulate the
data
mass of a plasticine, m
(g)
time taken for 10
oscillations, t (s)
period of an oscillation,
T (s)
20.0
40.0
60.0
80.0
100.0

2. Way to
analyse the
data
m / g
T / s