AP Physics Conservation of Angular Momentum Assignment Procedure Go to the following link and play "Marble Collides with Block" https://view.vzaar.com/21824938/player Step 1: View the video several times. Step 2: Calculate the initial speed of the marble Step 3: Notice the marked approximate center of mass of the wooden block Step 4: Find the distance from the center of mass where the marble hits the block Step 5: Measure the return speed of the marble Step 6: Measure the frequency of rotation of the block of wood Step 7: Record the mass of the marble, and the block: its dimensions and mass. Results We need to find the angular momentum of the system before and after the collision and check to see if angular momentum is conserved. Angular momentum is usually described by the variable L. Since we have a linear system, we can drop the vector notation. Lo is the momentum before and is given by Lo = mrv. where m is the mass of the marble, r is the distance the marble strikes the block from its center of mass, and Up is the initial velocity of the marble. Calculate Lo, as described above. We need to find the angular momentum after the collision &1. First, the return angular momentum of the marble is In,, = mov,- r is unchanged, but i, is the return speed of the marble. Because 17, represents a turning in the opposite direction, the value of L1,,, is negative. Calculate L1, , as described above.We next need to calculate the angular momentum of the block Lig . This is calculated as Lip = Iw and I = mal" , where my is the mass of the block, and where L is the length of the side nearest the camera. The total angular momentum L, = L1, + Lim = mgLZ + morvo Calculate Ly, as described above. Now find -. A value of 1 is perfect. To find the % deviation from the perfect case, use the formula: % Deviation = 1 - 2 x 100 Bonus Calculate the kinetic energy before and after collision. Is kinetic energy conserved? Error analysis Calculate your experimental error for the ratio . Is the value of your ratio within the experimental measurement error? Conclusion Is angular momentum conserved in this case? What are your feelings about this lab? What did you learn from this lab? Hand in Hand in all calculations, graphs, tables, measurements, and error calculations if any