3B Scientific Advanced Mechanics Kit - Manual (Page 3)

Mechanics/M401 Work sheet SEK
2
Sub-experiment 1: Evaluation
Table 1: Length of pendulum d = 0.60 m
Weight of pendulum bob m in kg Time in s for 10 oscillations Period of oscillation T in s
0.025 15.6 1.56
0.050 15.4 1.54
0.075 15.5 1.55
Select the correct answer:
1) Compare the periods of oscillation. The period of oscillation T is
a) dependent on
b) independent of
the pendulum mass m, all other things being equal
Correct: b)
Sub-experiment 2: Set-up and procedure
1) Use the set-up from sub-experiment 1, working with only one 25-g weight.
2) Enter the measurement you obtained in sub-experiment 1 for a pendulum length d = 60 cm into Table 2.
3) Change the length of the pendulum to d = 40 cm, measure the time for 10 oscillations and enter the value
into Table 2.
4) Repeat the measurement for the other lengths given in Table 2, entering your results into Table 2.
5) In each case, calculate the period of oscillation T in seconds and T² in s², entering the values into Table 2.
6) Plot the values in a graph of T² against d and draw a straight line through all the points and the origin.
Sub-experiment 2: Evaluation
Table 2: Mass of pendulum bob m = 0.025 kg
Length of
pendulum d in m
Number of
oscillations N
Time in s for
N oscillations
Period of oscillation T
in s
T² in s²
0.60 10 15.5 1.55 2.40
0.40 10 12.7 1.27 1.62
0.20 10 9.0 0.90 0.81
0.15 20 15.6 0.78 0.61
0.10 20 12.6 0.63 0.38
0.05 20 9.0 0.45 0.20