PHYS6AL Lab 3 (Energy Transformation)

PHYS6AL Lab Notebook Fall Semester 2021 Annie Lee and Davis Smith Instructor: Popescu, Berenstein TA: Leo Zhu Lab 3: Energy Transformation Exercise 1: The kinetic energy came from the potential energy stored in the band as it was being pulled back. Exercise 2: a) PE = mgh = m * 9.8 * 0.34 PE = 3.332m b) sin(30) = 0.34/x xsin(30) = 0.34 x = 0.68 R - x = 1.32 m c) W = (½)mv² W = -ΔU v = 2.581 m/s Activity 1 / Exercise 3: Data Points Time (s) Distance (m) Velocity (m/s) Height (m) Kinetic Energy (J) Potential Energy (J) 1 0.2 0.054 0.277 0.00054 0.00825 0.00114 2 0.6 0.150 0.219 0.00150 0.00516 0.00316 3 0.9 0.212 0.189 0.00212 0.00384 0.00447 4 1.2 0.265 0.163 0.00265 0.00286 0.00559 5 1.5 0.311 0.140 0.00311 0.00211 0.00656 6 1.8 0.349 0.116 0.00349 0.00145 0.00736 7 2.1 0.379 0.086 0.00379 0.00080 0.00799 8 2.4 0.401 0.058 0.00401 0.00036 0.00846 9 2.7 0.415 0.035 0.00415 0.00013 0.00875 10 3.0 0.421 0.010 0.00421 0.00001 0.00888