Question: Objective: observe energy conservation law. This Lab exercise is based on PhET Interactive Simulations project at the University of Colorado Boulder PROCEDURE A (No Friction)

Objective: observe energy conservation law. This Lab exercise is based on PhET Interactive Simulations project at the University of Colorado Boulder PROCEDURE A (No Friction) Start from 6.00 meters' height and decrease the height by 1.00 meter each time. Observe velocity at the bottom. And calculate it using energy conservation law. Find % error The total energy is the sum of the kinetic and potential energies: E = KE + PE 2 9i n1 v2 + mgh For this part E; = E; Veleei calculated nus Veleei measured uu'a PROCEDURE B (with friction) Do the experiment with En'ction. Start from 6.00 meters' height and decrease the height by 1.00 meter each time. Observe velocity at the bottom. Calculate Wnc. Use 70.0 Kg for the mass. The work done by Nonconservative forces is given by: WEIEiEt Veloei measured ma

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