## zaphod 3 years ago Help needed :)

1. zaphod

@03225186213

2. zaphod
3. 03225186213

ihave studid it three years back i have forgotten the formula for ten could u please mention it

4. zaphod

torque of a couple = one of the force * perpendicular distance between forces

5. zaphod

can u explain how u got it

6. 03225186213

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

7. zaphod

tension is 60N

8. 03225186213

i dont know if u give me formula then i can help you

9. zaphod

we hve learnt only torque formula, and the moment formula is = force * perpendicular distance for the pivot

10. supercrazy92

@03225186213 I think we have to use radius instead of diameter and i got 60N by this..

11. zaphod

12. supercrazy92

im not sure let someone correct this...

13. 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.

14. 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.