1. Using the protractor, and ruler(s), make the measurements you need so that you need to determine what the marble's velocity must have been to cause the pendulum to swing to the angle it reached. You can upload a picture showing the values you measured in the video and your calculations. Box in your answer for the initial velocity of the marble before it strikes the pendulum. If your birthday falls on: an odd-numbered day of the month, do trial 1 an even-numbered day of the month, do trial 2 Hint: The marble mass is 10+0.1 grams. The mass of the entire pendulum assembly is 5780.1 grams Saved The location of the center of mass of the pendulum assembly is 71.250.25 cm from the pivot point. (note: this is not the length of the pendulum, which means we can use the angle to determine the change in vertical height, h = L(1 - cos)) Measure the angle and use the conservation of momentum AND conservation of energy. BIU U X, X = The pendulum is at 47 degrees at the top of its swing. the length of the pendulum is 78cm at rest. x POF @