Chapter 19. Magnitude of torque (8-18)

Question

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{"title":"Magnitude of the torque produced by a force acting on an object","description":"Correct!","type":"correct","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"6,17,38,53\"}]"} {"title":"Magnitude of the force","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"114,7,151,53\"}]"} {"title":"Angle between the vector r (from the rotation axis to where the force is applied) and the force vector F","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"240,13,277,64\"}]"} {"title":"Distance from the rotation axis of the object to where the force is applied","description":"Incorrect","type":"incorrect","color":"#000080","code":"[{\"shape\":\"rect\",\"coords\":\"86,21,117,55\"}]"}

Question

Z340wLstWf6CxX+SFjdBxMeoJ2tXpWxDNB1A4g==
{"title":"Magnitude of the torque produced by a force acting on an object","description":"Wrong","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"6,17,38,53\"}]"} {"title":"Magnitude of the force","description":"Correct!","type":"correct","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"114,7,151,53\"}]"} {"title":"Angle between the vector r (from the rotation axis to where the force is applied) and the force vector F","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"240,13,277,64\"}]"} {"title":"Distance from the rotation axis of the object to where the force is applied","description":"Incorrect","type":"incorrect","color":"#000080","code":"[{\"shape\":\"rect\",\"coords\":\"86,21,117,55\"}]"}

Question

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{"title":"Magnitude of the torque produced by a force acting on an object","description":"Wrong","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"6,17,38,53\"}]"} {"title":"Magnitude of the force","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"114,7,151,53\"}]"} {"title":"Angle between the vector r (from the rotation axis to where the force is applied) and the force vector F","description":"Correct!","type":"correct","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"240,13,277,64\"}]"} {"title":"Distance from the rotation axis of the object to where the force is applied","description":"Incorrect","type":"incorrect","color":"#000080","code":"[{\"shape\":\"rect\",\"coords\":\"86,21,117,55\"}]"}

Question

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{"title":"Magnitude of the torque produced by a force acting on an object","description":"Wrong","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"6,17,38,53\"}]"} {"title":"Magnitude of the force","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"114,7,151,53\"}]"} {"title":"Angle between the vector r (from the rotation axis to where the force is applied) and the force vector F","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"240,13,277,64\"}]"} {"title":"Distance from the rotation axis of the object to where the force is applied","description":"Correct!","type":"correct","color":"#000080","code":"[{\"shape\":\"rect\",\"coords\":\"86,21,117,55\"}]"}

Review

In Figure 19-14b the distance \(r\) is one-half of the length \(L\) of the near or far side of the loop, and \(\phi\) is the angle between the direction of the near or far side of the current loop and the force exerted on either the top or bottom of the loop. This angle phi is also equal to the angle between the direction of the magnetic field and an imaginary line that’s perpendicular to the plane of the current loop. We call this imaginary line the normal to the plane of the loop.