Page 25 - text book form physics kssm 2020
P. 25
Chapter 1
Measurement
3. Hashim carried out an experiment to investigate the relationship between the mass of
slotted weights and the period of oscillation, T of a spring as shown in Figure 2.
Spring
Slotted
weight
Figure 2
Hashim measured the time, t for 20 complete oscillations for diff erent masses of slotted
weights. Th e data obtained is shown in Table 1.
Table 1
Mass of slotted weights, m /g 20 40 60 80 100
Time for 20 oscillations, t / s 26.0 36.0 44.4 51.0 57.2
Period of oscillation, T
2
T
2
(a) Complete Table 1 by calculating the values of derived data T and T . State the
appropriate units for both the physical quantities.
2
(b) Plot a graph of T against m with appropriate scales. Draw the best fi t line.
(c) Determine the gradient of the graph. Show clearly how it is done.
(d) If the experiment is done on the Moon, what is likely to happen to the gradient of
the graph?
(e) How can an oscillating spring with slotted weights be used as a time measuring device
2
with unit of measurement in seconds? (T = 4π 2 m )
k
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