anonymous
  • anonymous
Help needed :)
Physics
chestercat
  • chestercat
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anonymous
  • anonymous
@03225186213
anonymous
  • anonymous
http://screencast.com/t/cquYG2XF
anonymous
  • anonymous
ihave studid it three years back i have forgotten the formula for ten could u please mention it

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anonymous
  • anonymous
torque of a couple = one of the force * perpendicular distance between forces
anonymous
  • anonymous
can u explain how u got it
anonymous
  • anonymous
tor on Q=foorce*distance 3=f*0.1(100mm=0.1) f=3/0.1 f=30 this is force on Q as friction neglegible f on P =force on Q tor p=f*distance tor=30N*0.15m (150mm=0.15m) tor=4.5Nm may be i am wrong
anonymous
  • anonymous
tension is 60N
anonymous
  • anonymous
i dont know if u give me formula then i can help you
anonymous
  • anonymous
we hve learnt only torque formula, and the moment formula is = force * perpendicular distance for the pivot
anonymous
  • anonymous
@03225186213 I think we have to use radius instead of diameter and i got 60N by this..
anonymous
  • anonymous
why did u take radius?
anonymous
  • anonymous
im not sure let someone correct this...
Kainui
  • Kainui
You use radius for sure, because torque is based off the lever arm. It's mounted at the center and you apply torque at the outer ends of the pulley.
Kainui
  • Kainui
Think of it like a door. The hinges are at the center of a circle that the door sweeps out when you push it.

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