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Maximizing Torque in Straight and L-Shaped Wrenches: A Physics Exploration

This announcement discusses the application of forces to maximize torque on straight and L-shaped wrenches when rotating a hex bolt. It highlights how the force's direction and position influence torque, introducing essential concepts of angular acceleration in relation to two bars acted upon by equal forces. As part of this exploration, we examine how torque is computed and distinguish between clockwise and counterclockwise tendencies of motion. This knowledge is fundamental in mechanics and engineering applications.

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Maximizing Torque in Straight and L-Shaped Wrenches: A Physics Exploration

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  1. ANNOUNCEMENTS

  2. 1 of 3 A force is applied to the end of a straight wrench in order to rotate about the hex bolt. Which of the forces shown maximizes the torque applied to the wrench? 3 2 4 1 5

  3. 2 of 3 A force is applied to the end of a weird “L-shaped” wrench in order to rotate about the hex bolt. Which of the forces shown maximizes the torque applied to the wrench? 3 2 4 5 1

  4. 3 of 3 Bars A and B are acted upon by the forces shown. All forces have the same magnitude and are perpendicular to the bars. Each bar can rotate about its center on a frictionless pivot. The magnitude of bar B’s angular acceleration will be Greater than that of bar A. Equal to that of bar A. Less than that of bar A. Zero. A B LOOKING DOWN FROM ABOVE

  5. ANNOUNCEMENTS

  6. F q r O r Computing Torque F F q r O “Torque is the distance times the perpendicular force.” “Torque is the force times the torque arm.” • tendency toward CCW motion: “+” • tendency toward CW motion: “–”

  7. 1 of 3 A force is applied to the end of a straight wrench in order to rotate about the hex bolt. Which of the forces shown maximizes the torque applied to the wrench? 3 2 4 1 5

  8. 2 of 3 A force is applied to the end of a weird “L-shaped” wrench in order to rotate about the hex bolt. Which of the forces shown maximizes the torque applied to the wrench? 3 2 4 5 1

  9. 3 of 3 Bars A and B are acted upon by the forces shown. All forces have the same magnitude and are perpendicular to the bars. Each bar can rotate about its center on a frictionless pivot. The magnitude of bar B’s angular acceleration will be Greater than that of bar A. Equal to that of bar A. Less than that of bar A. Zero. A B LOOKING DOWN FROM ABOVE

  10. PROJECTION SCREEN 1 4 1 4 1 4 1 4 2 5 2 5 2 5 2 5 3 6 3 6 3 6 3 6 IV3: HAND IN TODAY’S ACTIVITIES SHEETS

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