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3.6 Test a hypothetical relationship by reducing it to linear form. Question 8 By measuring the length of the string in a pendulum experiment and recording the period after 20 oscillations, it is possible to estimate the acceleration due to gravity. The theoretical relationship between the period and the length of the string is: T = 2TTV (L/g) where T - period of the swing (in s) L - length of the string (in m) g - acceleration due to gravity IT- 3.14 A series of skid tests was carried out to test this hypothetical relationship. The data is shown in the table below. T T2 0.9 20 1.2 30 1.3 40 1.4 50 1.5 60 1.6 70 1.7 80 ) Plot a suitable graph to test the relationship. b) Measure the gradient of the line and calculate the acceleration due to gravity