Torque and Equilibrium
Über den Vortrag
Der Vortrag „Torque and Equilibrium“ von Jared Rovny, PhD ist Bestandteil des Kurses „Year I (Ethiopia National Curriculum)“.
Quiz zum Vortrag
In the equation for torque, τ = rF sin(θ), what does r stand for?
- The distance between the center of rotation and the point which the force is applied
- The perpendicular distance between the center of rotation and the line of force
- The distance from the center of mass of the object being rotated to the center of rotation
- The length of the object being rotated
- The distance from the center of rotation to the line perpendicular to the line of force
When will the torque applied to be maximized for a given distance r and force magnitude F?
- When the angle between the force line and the line connecting the pivot point to the point which the force is applied is 90 degrees
- When the angle between the force line and the line connecting the pivot point to the point which the force is applied is 0 degrees
- When the angle between the force line and the line connecting the pivot point to the point which the force is applied is 45 degrees
- Since torque only depends on the distance r and force magnitude F it is always the maximum
- When the force is applied parallel to the line connecting the pivot point to the point which the force is applied
If the distance between the center of rotation and the applied force is 2 meters, and the angle between the force and the distance is 30 degrees, what is the length of the lever arm?
- The lever arm is 1 meter
- The lever arm is 2 meters
- The lever arm is 0.5 meters
- The lever arm is 1.5 meters
- The lever arm is √3 meters
Why are doorknobs usually placed far away from the pivot point (center of rotation) of the door?
- This increases the distance r between the pivot point and where force is applied to the door, increasing the torque
- This minimizes the distance r between the pivot point and where force is applied to the door, increasing the torque
- The lever arm and force can then be parallel, providing the most torque
- The angle between the distance and force is then perpendicular, maximizing the torque
- Since after pulling the doorknob it would be easier to pass through the door if the doorknob is placed farther away from the pivot point
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Dozent des Vortrages Torque and Equilibrium
Jared Rovny, PhD
Dr. Jared Rovny has been a Lecturer at Yale University in Connecticut, USA since 2013.
He obtained his PhD in Physics from Yale University in 2019. He was awarded the D. Allan Bromley Graduate Fellowship in Physics in 2019 and the Princeton Quantum Institute Postdoctoral Fellow in 2020.
Currently, he works with Yale's Center for Teaching and Learning at Yale University.
Due to his achievements, he earned the Yale College Prize Teaching Fellowship for his work in PHYS 171 (University Physics for the Life Sciences).
Within Lecturio, Dr. Rovny teaches courses on Physics.
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very informative and helpful and will definitely use for my exams
