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What is the net torque on the see-saw? What is Anna's mass? Draw a properly labeled extended force diagram of the see-saw.

What is the net torque on the see-saw? What is Anna's mass? Draw a properly labeled extended force diagram of the see-saw.

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What is the net torque on the see-saw?

What is Anna's mass?

Draw a properly labeled extended force diagram of the see-saw.

**Understanding Torque and Balance: A See-Saw Example** In this lesson, we explore the concept of torque and balance using a practical example involving a see-saw. **Scenario:** Bob and Anna sit on opposite ends of a uniform see-saw that is 12.0 meters in length. The see-saw is balanced by a fulcrum located 4.00 meters from Bob. - Bob has a mass of 85.0 kilograms. - The see-saw itself has a mass of 100 kilograms. - Anna's mass is unknown. **Visual Representation:** In the accompanying diagram: - Bob is positioned at point B, on the left end of the see-saw. - Anna is positioned at point A, on the right end of the see-saw. - The fulcrum, represented by an inverted triangle, is situated 4.00 meters from Bob's side. **Length Division:** - The distance from Bob (B) to the fulcrum is 4.00 meters. - The remaining length from the fulcrum to Anna (A) is calculated as 12.0 meters - 4.0 meters = 8.0 meters. **Principle of Torque:** To balance the see-saw, the torque on both sides of the fulcrum must be equal. Torque is the product of the force applied and the distance from the pivot point (fulcrum). In this scenario: - The force due to Bob's weight (mass times gravity) is applied at 4.00 meters from the fulcrum. - The force due to Anna's weight and the opposite distance (8.00 meters from the fulcrum) are unknowns we aim to determine. By understanding the relationship between mass, distance, and balance, we can apply the principles of physics to solve practical problems, such as finding the necessary mass of Anna to balance the see-saw.
Transcribed Image Text:**Understanding Torque and Balance: A See-Saw Example** In this lesson, we explore the concept of torque and balance using a practical example involving a see-saw. **Scenario:** Bob and Anna sit on opposite ends of a uniform see-saw that is 12.0 meters in length. The see-saw is balanced by a fulcrum located 4.00 meters from Bob. - Bob has a mass of 85.0 kilograms. - The see-saw itself has a mass of 100 kilograms. - Anna's mass is unknown. **Visual Representation:** In the accompanying diagram: - Bob is positioned at point B, on the left end of the see-saw. - Anna is positioned at point A, on the right end of the see-saw. - The fulcrum, represented by an inverted triangle, is situated 4.00 meters from Bob's side. **Length Division:** - The distance from Bob (B) to the fulcrum is 4.00 meters. - The remaining length from the fulcrum to Anna (A) is calculated as 12.0 meters - 4.0 meters = 8.0 meters. **Principle of Torque:** To balance the see-saw, the torque on both sides of the fulcrum must be equal. Torque is the product of the force applied and the distance from the pivot point (fulcrum). In this scenario: - The force due to Bob's weight (mass times gravity) is applied at 4.00 meters from the fulcrum. - The force due to Anna's weight and the opposite distance (8.00 meters from the fulcrum) are unknowns we aim to determine. By understanding the relationship between mass, distance, and balance, we can apply the principles of physics to solve practical problems, such as finding the necessary mass of Anna to balance the see-saw.
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