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Can someone please explain to me what torque is and how to sum the torques... thanks!!!

2007-01-23 09:33:44 · 4 answers · asked by Kyle 4 in Science & Mathematics Physics

4 answers

Force applied perpendicular to a distance. Engineers refer to it as "moments". Standard unit of measurement is N.m or Newton metres.

In statics, for a structure to be stable in two dimentions, all the forces in the x direction, must sum to 0, all the forces in the y direction must sum to 0, and all the moments in the clockwise direction must sum to 0. When you add torque or moments they have a clockwise (+) or counter-clockwise (-) direction.

If you have a beam fastened at one point, then apply a force of 100 N, 3 m away from the fastened point, then you have a moment of 300 N.m.

2007-01-23 09:40:51 · answer #1 · answered by Christina 6 · 0 0

Torque is force in a circular direction. (twisting force?)

The way to compute the torque applied to something is "force times lever arm." Force is simply the magnitude of a force, e.g. 1lb. The lever arm is the perpendicular distance between the direction of the force and the center of rotation.

If you have a socket wrench on a nut, for instance, and grip the end of the wrench at about 6 inches from the center of rotation, and apply one pound of force, this creates 0.5 foot-pounds of torque on the nut, assuming that you are pushing perpendicular to the wrench handle.

If you have a longer wrench, say one with a 2-foot long handle, you can push the end of the handle with the same 1 pound of force, but you would now generate 2 foot pounds of torque.

This is why it's easier to turn a screw with a screwdriver that has a fat handle in stead of one that is really skinny, like a jeweler's screwdriver. The fatter handle increases the lever arm, so the same force that you exhert with your hand is multiplied by the thickness of the screwdriver handle.

2007-01-23 09:48:43 · answer #2 · answered by ZeroByte 5 · 0 0

Well torque is just this equation:
T=Fr where T=torque, F=Force being used, r=distance on the lever arm from the pivot point. (pivot point is where the object will be turing it)
---- this is my response to another question that i answered yesterday....

http://answers.yahoo.com/question/index;_ylt=AoluHJHXF96IfdVGev_uZb7sy6IX?qid=20070122183613AAqsMzS


Also here is a site that my teacher gave us to hep us practice our stuff...
http://www.physicsclassroom.com/Default2.html
and this one too
http://bcs.wiley.com/he-bcs/Books?action=index&itemId=0471151831&itemTypeId=BKS&bcsId=1346

2007-01-23 09:54:35 · answer #3 · answered by Anonymous · 0 0

Something in an energy drink.

2007-01-23 09:45:49 · answer #4 · answered by Anonymous · 0 0

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