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    For the last two parts I got

    v = 1.51 ms^-1 (2dp)

    Radius = 0.542m (3dp)

    Are these correct?

    g=9.81

    Thanks
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    c ) v = 1.505545305 m/s :borat:
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    (Original post by the bear)
    c ) v = 1.505545305 m/s :borat:
    g = 9.81
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    (Original post by khanpatel321)

    For the last two parts I got

    v = 1.51 ms^-1 (2dp)
    Without premature rounding, I get 1.5052 ms^-1 so that matches with yours.
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    (Original post by Zacken)
    Without premature rounding, I get 1.5052 ms^-1 so that matches with yours.
    sqrt( 9.81 / 0.8cos(30) ) * 0.8sin(30) = 1.505165259

    What did you do?
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    (Original post by khanpatel321)
    Radius = 0.542m (3dp)
    I get the same.
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    (Original post by khanpatel321)
    sqrt( 9.81 / 0.8cos(30) ) * 0.8sin(30) = 1.505165259

    What did you do?
    \displaystyle T\sin \theta = \frac{mv^2}{r} \Rightarrow v = \sqrt{\frac{3g}{\sqrt{3}} \times \frac{0.4}{3}}.
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    (Original post by Zacken)
    I get the same.
    (Original post by Zacken)
    \displaystyle T\sin \theta = \frac{mv^2}{r} \Rightarrow v = \sqrt{\frac{3g}{\sqrt{3}} \times \frac{0.4}{3}}.
    Ok nice, thanks
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    (Original post by khanpatel321)
    Ok nice, thanks
    Out of interest, where do you get these questions from? They are very nicely typeset.
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    (Original post by Zacken)
    Out of interest, where do you get these questions from? They are very nicely typeset.
    They are questions from an introduction to mechanics for engineers course i'm doing at uni.
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    (Original post by khanpatel321)
    They are questions from an introduction to mechanics for engineers course i'm doing at uni.
    Makes sense, thanks!
 
 
 
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