horizontal velocity!

is ω=√24g/5l ??
if yes then i will post the soln.

it is 7 instead of 5........

plz intelligent guys and gals the application of conservation of energy may be simple for u but i m not getting how...!!!!!!

plz kindly send solution

I am also getting same as Eureka
should I supply the steps??

Solution

I about A = ml²/4 + ml²
=ml²(5/4)
Iw²/2 is the rotational energy
=5ml²w²/8
The rotation is a full circle therefore the maximum potential energy that will be gained will be mgl(for the middle one) + mg2l(for the one at B)
5ml²w²/8 = 3mgl
w² = 24g/5l
w = √(24g/5l)

yup...virang soln is perfect......
@cena answer in ur book is rong.....

good question.helps alot in jee