How to do....

[naved_s9994]

How do you attempt TORQUE questions....
I am LOST !

[TrueTears]

T = Perpendicular force distance from where the force acts to where you are taking torques from

[naved_s9994]

yea but like, can you give an example of using it on a HARD torque question.....even from textbook would be cool

[TonyHem]

Give an example of a question that you can't do. Probably a bridge one?

[TrueTears]

yea but like, can you give an example of using it on a HARD torque question.....even from textbook would be cool

What do you mean by "hard", if you can do the basic torque questions, then the "harder" ones can be done by applying the same principles. Also if you need tension, always split it into its horizontal and vertical components.

[pHysiX]

heres a basic rundown of my thought process:

1)pick a pivot point that is as convenient as possible.
2)identify all clockwise and anti-clockwise torques (a clue is to look for any remaining forces and make sure they are perpendicular to the distance from the pivot point)
*another thing to note is that the distance need not always be horizontal: eg/ some punk trying to push over a car -->there's the torque from the car's weight (horizontal distance + perpendicular weight force) and torque from the applied force (vertical distance to the roof of the car and horizontal applied force)
3)then do you calculations

hope it helps =]

[naved_s9994]

yea physix, thanks....actually problem was, at my school we did Detailed study first, then motion, then electronics....then we we did the practice Q's, I was lost on only structures....i was fine with rest..

This rundown, recounts it all - THANKS

[Mao]

heres a basic rundown of my thought process:

1)pick a pivot point that is as convenient as possible.
2)identify all clockwise and anti-clockwise torques (a clue is to look for any remaining forces and make sure they are perpendicular to the distance from the pivot point)
*another thing to note is that the distance need not always be horizontal: eg/ some punk trying to push over a car -->there's the torque from the car's weight (horizontal distance + perpendicular weight force) and torque from the applied force (vertical distance to the roof of the car and horizontal applied force)
3)then do you calculations

hope it helps =]

remember that when you calculate the torque, ALWAYS, ALWAYS, ALWAYS use the PERPENDICULAR force.

[naved_s9994]

what you mean Mao

[pHysiX]

for work, we must use the force in the direction of motion. for torques, the force is one that is PERPENDICULAR to the distance. that's wat mao means =]