CYCLOID !!!

A cycloid is a curve so that time of descent under action of gravity is minimum for any two pts on the curve

find its eq

( be original no copywork Q inspired from a model in a science park i visited )

10 Answers

9
Celestine preetham ·

assume surface frictionless and initial velocity 0

3
iitimcomin ·

isnt it the path trased by a pt on the end of a sphere durng pure rollin....[frm RD]

3
iitimcomin ·

it goes in a path such that its x and y coordinates have ..

WRt + Rsin(Wt) , R-RcosWt ....... where R,W,t are various parameters !!!!! solving we can get equation of path

9
Celestine preetham ·

yes but im looking for a derivation !!

i was able to find T =0x∫dx√(f'(x)2+1)/2gf(x)

but then how do you proceed ????

9
Celestine preetham ·

iitimcommin i already said no copywork
i know the formulas
but unable to find a proof

3
iitimcomin ·

oh!! u r tryin to derive using the def. od the cycloid u gave ...............

but i did it in a much simpler way ........... using the fact that a cycloid is the path trased by a pt on the end[on circumfrence] of a sphere durng pure rollin.....

will try to do with ur def .............

anywayz ... wat model did u cum across..............................???????

dude u shud enjoying life after acing all exams .....

3
iitimcomin ·

its easily derivable using the pur rolling thingi i mentioned bfore .... AND IT WAS NOT COPYWORK

9
Celestine preetham ·

yes deriving eq using that rolling thingy is easy but i m asking in the particular prob abv how do u proceed ??? and yes i dont know wat means enjoying life to you but for me maths and phy are a passion so i enjoy life before after and during exams [3]

1
Rohan Ghosh ·

such a curve is also called a brachistorone .I know a proof involving langrangian mechanics! I dont think it has got a trivial proof ..

9
Celestine preetham ·

can u show the proof rohan

i tried solving but in vain

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