06-05_task

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University of Alabama *

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0180

Subject

Mechanical Engineering

Date

Apr 3, 2024

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docx

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4

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Name: Date: School: Facilitator: 6.05 Forces Lab To complete this virtual lab, first open the PhET Forces and Motions Interactive found linked on the Task page. Follow the directions below for each section to complete this virtual activity. Part 1: Net Force Open the first section of the PhET Force and Motions Interactive: Net Forces. You will use this interactive to set up two tug of war games. Before you set up your games, click the boxes to show the “Sum of Forces” and “Values” at the top of the page. Drag a blue team and a red team onto the rope. Set up your team in such a way that the forces on each side are not equal. Record the total force values for each team below: 1. Force Value for Red Team: 350 N 2. Force Value for Blue Team: 150 N Now click “GO.” Record what happens below and answer the questions about the sum of forces. 3. What happened in the tug of war game? The blue team won . 4. What was the sum of the forces in your tug of war game? 200 N a. What direction was this force in? left Now drag another blue team and a red team onto the rope. Set up your team in such a way that the forces on each side are equal. Record the total force values for each team below: 1. Force Value for Red Team: 100 N 2. Force Value for Blue Team 100 N Now click “GO.” Record what happens below and answer the questions about the sum of forces.
3. What happened in the tug of war game? It was a tie game, Nobody took the win 4. What was the sum of the forces in your tug of war game and what direction was this force in? 0 with no direction 5. Which tug of war game demonstrated balanced forces? the second game 6. Which tug of war game demonstrated unbalanced forces? the firs t game Part 2: Net Force Open the first section of the PhET Force and Motions Interactive: Motion. You will use this interactive to investigate forces and motion. Before you set up your games, click the boxes to show the “Forces”, “Values”, “Masses”, and “Speed” at the top of the page. Begin by dragging objects onto your skateboard in the middle of the page. You may drag the boxes, refrigerator, or any of the other items or people. 1. What is the total mass of all the items stacked on your skateboard? 250 kg Now have your person push against the skateboard with each of the applied forces listed below and record the Speed at which the skateboard moves (Hint: After you record the speed you can pause the skateboard and set a new applied force). Trial Applied Force Speed of Skateboard 1 50 N the speed increase very slowly 2 100 N The speed increases faster than 50 N of force, but still very slow. 3 400 N With more force applied, the speed increases much more rapidly.
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