4. How does the length of the string affect the period of oscillations? 5. Calculate the acceleration due to gravity in a place where the period of oscillation of a 74.500 cm pendulum is 1.4073 s?Experiment 2 MEASUREMENT OF TIME Observations and Data The Swinging Pendulum A Simple Device for Measuring Time and Determining Acceleration Due To Gravity Trials Radius, r Length of the No. of Total time, Period , T Experimental (cm) string, L swing t (s) value of g (cm) (cm/s2) Calculations:MEASUREMENT OF TIME There are many uses of pendulum one of which is in clocks, where it functions as a simple harmonic oscillator with small displacement ofless than 150. From its harmonic motion the period can be derived. T = 2xVL Manipulating the equation for its motion will give an equation to determine the value of the acceleration due to gravity. Watch the video attached in the Experiment 2 page. Perform a similar experiment as done in the video. Complete the Data and Answer Sheet below. Show all calculations. The length L, in the equation is the sum of the length of the string and the radius of the ball or any spherical mass that served as the pendulum. Vary the length of the string in each trial. Hold the string lightly and release at an angle of about 15 degrees from the vertical, its equilibrium position. Evaluate how well you have done the experiment by calculating the % error. Use the average experimental value of g and 980 cm/s as the true or accepted value. Answer the following questions: 1. Were the intervals of the swing longer or shorter than a second? Account for equality or inequality. 2. How is the frequency of a timer related to its frequency? 3. What repetitive phenol in the solar system serves as mankind's time standard