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
Posted by Benji at 09:19

19 comments:

  1. Niek5 April 2011 at 09:48

    This is too much for me. lol :)

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  2. Fleischgarten5 April 2011 at 09:59

    very interesting read! Any tips how to memorize it?

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  3. Benji5 April 2011 at 10:26

    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. Tibble5 April 2011 at 11:26

    Picture, great
    sum - wut ?

    ReplyDelete
  5. POP!5 April 2011 at 11:27

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

    ReplyDelete
  6. Alpha5 April 2011 at 12:30

    Seems like somewhat practical knowledge.

    ReplyDelete
  7. 1235 April 2011 at 12:58

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

    ReplyDelete
  8. Potholderz5 April 2011 at 13:50

    Damn i hate physics, actually math in general.

    ReplyDelete
  9. iJamie5 April 2011 at 13:50

    oh wow im so bad at this :/
    nice blog

    ReplyDelete
  10. BTN Hip Hop5 April 2011 at 13:57

    loved mechanics in college, following.

    ReplyDelete
  11. Unknown5 April 2011 at 13:58

    interesting

    ReplyDelete
  12. Insider335 April 2011 at 14:15

    I was surprised I actually understood that.

    ReplyDelete
  13. Ares5 April 2011 at 14:31

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

    ReplyDelete
  14. consuela bananahammoc5 April 2011 at 15:28

    I feel confused :D

    ReplyDelete
  15. Joe:)5 April 2011 at 16:27

    hehe physics

    ReplyDelete
  16. Wolle6 April 2011 at 10:35

    got that

    ReplyDelete
  17. Anonymous6 April 2011 at 16:59

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

    ReplyDelete
  18. doomsday7 April 2011 at 16:41

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

    ReplyDelete
  19. Jok3r10 April 2011 at 13:49

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

    ReplyDelete

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