gravitation

the speed of earth's rotation about its axis Ï‰.its speed is increased to x times to make eff. acceleration zero at the equator then x=??????

2 Answers

106

Asish Mahapatra ·2009-08-24 19:23:00

g_eff at equator is given by g-Ï‰²R
(draw the FBD at the equator to convince urself)

So g_eff is zero if g=Ï‰'²R
So, Ï‰' = √g/R

Now Ï‰'/Ï‰ = x (given)
So, x = √g/R/Ï‰

thanx

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