Forces in One Dimension Use the Forces in One Dimension simulation to perform this lab. 1. In the default setting you are applying a force to a filing cabinet to push the cabinet across the floor. Apply a force by entering a number in the white box on the left. Then review what happens to the free body diagram in the top right. Record the four forces depicted in the diagram and what they mean. FN FG Friction Force = -100N This is the force working against the applied force created by the gravitational force Applied Force = 100N This is how much force is being applied to the file cabinet to try and get it to move Normal Force = 1961.3N this is the amount of force that the ground is pushing up on the file cabinet Gravitational Force = 9.8 N/kg this is the amount of force per kilogram pulling down on the filing cabinet 2. To start the simulation, after entering a force, press the "Go" button. Apply enough force until the filing cabinet moves. How does the force of friction change when the filing cabinet starts to move? Explain this change. 3. Reset the simulation by pressing "Clear". For the next simulation you need to record three phases - the filing cabinet not moving, the filing cabinet moving, and the filing cabinet moving a little faster. Start by applying a force that you know from the previous simulation will not cause the filing cabinet to move. Press "Go". After a few seconds apply a greater force so the filing cabinet begins to move. After a few more seconds apply a greater force. Pause the simulation when you are done and click "Graph Applied Force" and "Graph Velocity". Copy the image with both graphs and paste it below. 4. Describe how the velocity of the filing cabinet changes when you apply the three forces. 5. You graphed the velocity of the filing cabinet and the time it traveled at that velocity for three forces. How can this information be used to find the acceleration for each applied force? Calculate the acceleration for the three forces by hand. Click "Graph Acceleration". Use the sliding grey bar to find the acceleration for each force applied. Report the results below. Were your calculations correct? 7. "Clear" the simulation. In the next simulation you will apply a force to start moving the filing cabinet. While the filing cabinet is moving turn the friction off on the right hand side, then reduce the applied force to 0. What happens to the filing cabinet when the applied force drops to O. Explain your answer. 8. Open the four graphs the simulation created from the previous simulation. Copy and paste a screen shot below. Explain what happens to the velocity and acceleration when the force is first applied, when the friction is turned off, and when the force stops being applied