Textbook:


Here is a combination of two textbook question:

In the first diagram, the wedge is smooth. The block, when imparted a velocity 'v', achieves a maximum height of 8m...

In the second question, the plank is rough. Given the same velocity, the block travels a distance of 6m on the plank.

Find the coeff. of friction of the plank.
Is such a plank feasable???

13 comments:

  1. AnujMarch 15, 2010 at 5:51 PM

    nice..

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  2. ankush sachdevaMarch 15, 2010 at 5:57 PM

    This comment has been removed by a blog administrator.

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  3. AnujMarch 15, 2010 at 6:03 PM

    gr8..

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  4. DigvijayMarch 15, 2010 at 8:16 PM

    myu=4/3
    i think shayad cooper surfaces k beech mein myu is greater than 1..baaki pta nai..
    (ps-sry wo resistance waale Q dekh kar hi mann nai kar rha..n wanna stay away from internet as much as possible now till JEE..to isliye im not answerin them ;) ...)

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  5. AnantMarch 15, 2010 at 9:56 PM

    Co-eff = 4/3
    How to classify this as feasible or not?

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  6. AnujMarch 15, 2010 at 10:03 PM

    Anant, i don't think you can have a plank with such high coeff of friction...

    Aur yaar Digvijay, this might be one of your last visits to this blog; i got only 4 things to say:

    1)Chill man..(easier said than done)

    2)If you have left ANY portion or topics, do them at least once now. You never know what they ask in paragraphs...

    3)Your Physics is better than required. Focus more on Maths and particularly INORGANIC CHEMISTRY...

    4)Visit at least once bfore JEE...i have yet not found time to post a fantastic observation, the CENTER OF ROTATION ANALOGIES...they will not help you, but still you will love it!

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  7. AnantMarch 15, 2010 at 10:38 PM

    Does that mean the answer was wrong or that it's not feasible? :-/

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  8. aakashMarch 16, 2010 at 5:17 PM

    this is not feasible

    coeff of friction can't be more than 0.99

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  9. akash rupelaMarch 16, 2010 at 5:21 PM

    it can be more than 1 dude
    but yeah, its not feasible

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  10. aakashMarch 16, 2010 at 5:26 PM

    iska matlab hai ki 1 ho sakta hai jo ki impossible hai

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  11. aakashMarch 16, 2010 at 5:27 PM

    it is 0 <= mu < 1

    ok

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  12. aakashMarch 16, 2010 at 5:28 PM

    and acc. to you it is 0 <= mu <= 1

    that is not correct ,,, i think

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  13. akash rupelaMarch 16, 2010 at 7:01 PM

    acc to me 0<µ , it can be less or more than 1
    you can google or wiki for the same
    ALSO you can never have something perfectly smooth

    ReplyDelete

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