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Zeerak

  • 2 years ago

what is the derivation behind the formula: 1/A - 1/B = 1/T

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  1. FoolForMath
    • 2 years ago
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    What is A, B and T?

  2. Zeerak
    • 2 years ago
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    for example the question : A full bath tub will empty at an average rate of 10 mins. it will fill up to full at an aaverage rate of 8 mins if the plug is in. how long will it take to fill up to full if the plug is removed and tap is turned on?

  3. Zeerak
    • 2 years ago
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    in this question, to solve it we aply the above formula. so a = 8, b = 10 t is to be found out, answer is 40

  4. FoolForMath
    • 2 years ago
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    Oh yes, think about positive work done and negative work done.

  5. Zeerak
    • 2 years ago
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    I dont get it.

  6. Zeerak
    • 2 years ago
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    why is a 1/a?

  7. Zeerak
    • 2 years ago
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    i mean why do we write it like 1/a is it inverse proportionality?

  8. atlas
    • 2 years ago
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    The more the time it takes to get a work done, The less amount of work is done in unit time..........>>>Do u see the inverse relaationship??

  9. atlas
    • 2 years ago
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    Lets say I do a work in 10 minutes >>> I have done 1/10th of the work in a minute

  10. Zeerak
    • 2 years ago
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    ok so why do we have to tak unit time in this formula?

  11. Zeerak
    • 2 years ago
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    take*

  12. Zeerak
    • 2 years ago
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    is it something related to physics ? if yes please tell me the topic?

  13. atlas
    • 2 years ago
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    You need to get one work done. You cannot talk in terms of time.........You have to talk in terms of how much work is done Thats why...................Lets say I do the work in A minutes. U spoil the work in B minutes..............>>>>>So in unit time we do (1/A-1/B) work together. right ?? Now we know how much work we accomplish in unit time............so u can find out how much time we shall need to get the work done ;)

  14. Zeerak
    • 2 years ago
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    goo answer thanks. but why am i the one who spoils the work?? :D

  15. Zeerak
    • 2 years ago
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    good*

  16. atlas
    • 2 years ago
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    Just an example :P

  17. Zeerak
    • 2 years ago
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    @TuringTest

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