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Q

OCW Scholar - Multivariable Calculus
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|dw:1350223048970:dw|
|dw:1350223094711:dw|
|dw:1350223141650:dw||dw:1350223162295:dw|

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Other answers:

Hmm.. So.. *strength* <- how to calculate that??
in case of platform |dw:1350223305158:dw|
|dw:1350223350144:dw|
What about the platform? Something ugly is that the platform is something you need to balance but it also provides support to you!
|dw:1350223607516:dw|
assuming that case II in not our case.
|dw:1350223731501:dw|
|dw:1350223745248:dw|
|dw:1350224941551:dw|
Why is the tension opposite?
think of this in this way ... suppose platform is broken ... |dw:1350225254972:dw| how do you balance this?
T1 + T2 = W1+W2 F = T2 Hmm, probably it's wrong.
yes that that's right ... |dw:1350225421414:dw|
Huh?! Seriously?! That's..... *right* ?!
yep ... but your are seeking more trouble!!
How can I reduce those trouble if they are really that troublesome :|
... well ... if you take up trouble then you will understand more. give it a try.
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!!
suppose ... the weight of platform is less than weight of person.
I'll give you simple Q.|dw:1350226233525:dw|
10N - 5N = 5N (downwards)?
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.
F-T1 ? That looks strange!
|dw:1350226496018:dw|
both tension and weight is a force ... so you can add them up.
|dw:1350226590287:dw|
|dw:1350228019586:dw|
|dw:1350228159702:dw|
sorry ... I forgot to highlight it .
It's my mistake. I'm just too stupid! Sorry!
partly my fault too ... I don't elaborate ... usually use figures ... so I should have highlighted.
so do you get it?
98%
what is the max force that you can apply ... refer to the first post!!
Your weight!
so you have|dw:1350228670243:dw|
W1
yep ... that's correct ... we arrived at the conclusion what we did without any trouble.
Trouble trouble trouble!
well ... I hope you understood it better.
If I don't understand ... I will ask!
sure ... sometimes troubles are worth taking. It gives insight on problem.
Only if I know that ''insight''..

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