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M1



For the last two parts I got

v = 1.51 ms^-1 (2dp)

Radius = 0.542m (3dp)

Are these correct?

g=9.81

Thanks
(edited 7 years ago)
c ) v = 1.505545305 m/s :borat:
Original post by the bear
c ) v = 1.505545305 m/s :borat:


g = 9.81
Reply 3
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.
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?
Reply 5
Original post by khanpatel321

Radius = 0.542m (3dp)


I get the same.
Reply 6
Original post by khanpatel321
sqrt( 9.81 / 0.8cos(30) ) * 0.8sin(30) = 1.505165259

What did you do?


Tsinθ=mv2rv=3g3×0.43\displaystyle T\sin \theta = \frac{mv^2}{r} \Rightarrow v = \sqrt{\frac{3g}{\sqrt{3}} \times \frac{0.4}{3}}.
Original post by Zacken
I get the same.


Original post by Zacken
Tsinθ=mv2rv=3g3×0.43\displaystyle T\sin \theta = \frac{mv^2}{r} \Rightarrow v = \sqrt{\frac{3g}{\sqrt{3}} \times \frac{0.4}{3}}.


Ok nice, thanks :smile:
Reply 8
Original post by khanpatel321
Ok nice, thanks :smile:


Out of interest, where do you get these questions from? They are very nicely typeset.
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.
Reply 10
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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