Purpose:To discover the relationship between the tension force of a string and the period of a mass being swung around in a circle.

Materials:(1) string, (2) rubber stoppers, (3) pen tube, (4) masses ranging from 100g to 500g

Observations: [Comm. - 2 marks]

Complete the table below based on your observations. Do your best to reduce error when performing your experiment. The title has been provided for you.

Important note: When performing the experiment, be sure to drop the pendulum from the exact same angle each time. This is a control variable. Perhaps cut out a wedge of paper or cardboard that will help you set the pendulum to the same angle each time. This should be included in your diagram.

Mass oi Force of Force of Trial 1 Trial 2 Trial 3 Average Period Just in Case Column hanging gravity on tension in object hanging string Time for 10 Time for 10 Time for 10 object cycles cycles cycles m1 FT (s) (kg) (N) [+/-0.05] (N) (s) (s) (s) [+/- 0.1] [+/- 0.1] [+/- 0.1] 0. 100 0.95 0.95 6.0 6.0 6.1 0.60 0.200 1.98 1.98 4.5 4.6 4.6 0.46 0.300 2.96 2.96 3.2 3.2 3.2 0.32 0.400 3.95 3.95 2.6 2.7 2.6 0.26 0.500 4.99 4.99 2.1 2.0 2.0 0.20 Mass of rubber stopper (m2): 0.050 kg [+/- 0.001 ] Length of radius (r) : 0.5 m [+/- 0.001 ]