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PROJECT 2 ACCELERATION DUE TO GRAVITY Aim: Part 1. To learn how to draw linear graphs with Excel software Part 2. Determine the acceleration due to gravity using a simple pendulum Equipment: Part 1 - Computer, Excel software Part 2 - Pendulum bob, fishing line, stop watch, metre ruler, retort stand, clamp, computer and Excel software Part 3 - MATLAB optional Reading: University Physics with Modern Physics. Chapter 14. Pages 457 - 482 in particular 474-475. Learning goals: By doing this experiment you will be able to explain How to draw a linear graphs with Excel. How to describe oscillations in terms of amplitude, period, frequency and angular frequency. How to do calculations with simple harmonic motion. How to analyse the motions of a simple pendulum. ... Part 1 : Drawing a graph with Excel. In this exercise we will use the Excel software to draw a linear graph. Follow the instructions given below to use the data for an experiment carried out on a simple pendulum. The period T for a simple pendulum of length L is given by T = 2nt(L/g) 12 To find the value of g (the acceleration due to gravity) we rewrite the equation as T2 = (47 7/g) L This equation is of the form y = mx, where m is the gradient of the straight line passing through the origin. Comparing the two equations shows us that the gradient of a line obtained by plotting T' against L can be equated to 4x-/g . Thus, gradient = 4n /g and g =4x /gradient Thus, by obtaining the gradient of the straight line (T2 vs L) allows us to find the value of g. 13