## experimentX Group Title Q one year ago one year ago

1. experimentX

|dw:1350223048970:dw|

2. experimentX

|dw:1350223094711:dw|

3. experimentX

|dw:1350223141650:dw||dw:1350223162295:dw|

4. RolyPoly

Hmm.. So.. *strength* <- how to calculate that??

5. experimentX

in case of platform |dw:1350223305158:dw|

6. experimentX

|dw:1350223350144:dw|

7. RolyPoly

What about the platform? Something ugly is that the platform is something you need to balance but it also provides support to you!

8. experimentX

|dw:1350223607516:dw|

9. experimentX

assuming that case II in not our case.

10. experimentX

|dw:1350223731501:dw|

11. RolyPoly

|dw:1350223745248:dw|

12. experimentX

|dw:1350224941551:dw|

13. RolyPoly

Why is the tension opposite?

14. experimentX

think of this in this way ... suppose platform is broken ... |dw:1350225254972:dw| how do you balance this?

15. RolyPoly

T1 + T2 = W1+W2 F = T2 Hmm, probably it's wrong.

16. experimentX

yes that that's right ... |dw:1350225421414:dw|

17. RolyPoly

Huh?! Seriously?! That's..... *right* ?!

18. experimentX

yep ... but your are seeking more trouble!!

19. RolyPoly

How can I reduce those trouble if they are really that troublesome :|

20. experimentX

... well ... if you take up trouble then you will understand more. give it a try.

21. RolyPoly

T1 + T2 = W1+W2 F = T2 So, T1 + F = W1 + W2 For max F, F = W1 And .. it cancels out... T1 = W2 What's wrong with me!!

22. experimentX

suppose ... the weight of platform is less than weight of person.

23. experimentX

I'll give you simple Q.|dw:1350226233525:dw|

24. RolyPoly

10N - 5N = 5N (downwards)?

25. experimentX

yep ... you have to apply the same case here. The person is pulling the string down <-- the person is being pulled up you need to split the weight of person.

26. RolyPoly

F-T1 ? That looks strange!

27. experimentX

|dw:1350226496018:dw|

28. experimentX

both tension and weight is a force ... so you can add them up.

29. experimentX

|dw:1350226590287:dw|

30. experimentX

|dw:1350228019586:dw|

31. RolyPoly

|dw:1350228159702:dw|

32. experimentX

sorry ... I forgot to highlight it .

33. RolyPoly

It's my mistake. I'm just too stupid! Sorry!

34. experimentX

partly my fault too ... I don't elaborate ... usually use figures ... so I should have highlighted.

35. experimentX

so do you get it?

36. RolyPoly

98%

37. experimentX

what is the max force that you can apply ... refer to the first post!!

38. RolyPoly

39. experimentX

so you have|dw:1350228670243:dw|

40. RolyPoly

W1

41. experimentX

yep ... that's correct ... we arrived at the conclusion what we did without any trouble.

42. RolyPoly

Trouble trouble trouble!

43. experimentX

well ... I hope you understood it better.

44. RolyPoly

If I don't understand ... I will ask!

45. experimentX

sure ... sometimes troubles are worth taking. It gives insight on problem.

46. RolyPoly

Only if I know that ''insight''..