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Minilab 7 Rotational Motion

Minilab 7 Rotational Motion. Page 1. Purpose. U se the principle of conservation of energy to study rotational inertia and rotational energy. Then, we will study angular momentum to see if it is conserved. Page 2. Theory. Page 3. theory. Page 4. Procedure.

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Minilab 7 Rotational Motion

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  1. Minilab 7Rotational Motion Page 1 Department of Physics & Astronomy

  2. Purpose Use the principle of conservation of energy to study rotational inertia and rotational energy. Then, we will study angular momentum to see if it is conserved. Page 2 Department of Physics & Astronomy

  3. Theory Page 3 Department of Physics & Astronomy

  4. theory Page 4 Department of Physics & Astronomy

  5. Procedure Activity 1 – Rotating Bodies and Conservation of Energy As the hanging mass drops, the plate starts to rotate faster and faster. You must decide whether total energy is conserved or not. Make sure to consider all relevant energy types! Page 5 Department of Physics & Astronomy

  6. Note that the Smart Pulley (circled below) measures its own angular velocity, which is NOT the same as that of the platter. The Smart Pulley angular velocity and the platter’s angular velocity are related. You need to find this relationship. Procedure Page 6 Department of Physics & Astronomy

  7. Procedure Activity 2 – Collisions Between Rotating Objects You will rotate the main platter, then drop a second platter on top of the other. You will see if angular momentum is conserved or not. Note the main platter MUST be turned upside down as shown below. Page 7 Department of Physics & Astronomy

  8. Procedure Activity 3 – The Spinning “Ice Skater” Place the aluminum track on top of two plates (the main platter and one other) with the carts in the track. You can then use a thread to pull the carts towards the center of the plate. Your task is to see if momentum is conserved as the carts are pulled in. Page 8 Department of Physics & Astronomy

  9. Hints Page 2 of the Capstone workbook contains tables that will help you interpret what you see on Page 1. To show this information in the tables, click on Page 2, then click on the “Data” tab and select the “Run” you wish to analyze. Page 9 Department of Physics & Astronomy

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