I love Science and maths :D This blog i will post random parts of my As levels that will teach you how to do As chemistry, physics and maths :)

Tuesday 5 April 2011

Physics/Mechanics - How to work out tension in a light inextensible string

Okay guys, best thing to do with this is not to over complicate it so you do not get confused...


Here is a picture of a pulley with 2 attached particles of mass 4kg and 5kg, if the acceleration is 1.09 meters per second per second what is the tension?

Using either of the 2 formulas
If M = largest particle and m = smallest particle
g = gravity which is a constant = 9.8(1)
M x g - M x a = T
m x g + m x a = T

5kg x 9.8N - 5kg x 1.09 = 43.6N
4kg x 9.8N + 4kg x 1.09 = 43.6N

19 comments:

  1. This is too much for me. lol :)

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  2. very interesting read! Any tips how to memorize it?

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  3. Well understanding it + spamming questions works... Saying it to yourself before you go to bed several times and recalling it helps a lot I find..

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  4. Man I do not feel like looking into how to answer this

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  5. Seems like somewhat practical knowledge.

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  6. I kind of understand the formula, but nothing behind it :(

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  7. Damn i hate physics, actually math in general.

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  8. oh wow im so bad at this :/
    nice blog

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  9. loved mechanics in college, following.

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  10. I was surprised I actually understood that.

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  11. I feel a little... bit.. smarter !

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  12. interesting stuff, wish i was as smart as you :P

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  13. this is too complicated... I'm stoned.

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  14. Lot's of maths and physics and I have a Calculus II examam on wednesday!

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