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Two small rings each of mass 'm' are con...

Two small rings each of mass `'m'` are connected to a block of same mass `'m'` through inextensible light strings. Rings are constrained to move along a smooth horizontal rod. Initially system is held at rest (as shown in figure) with the strings make an angle of `theta = 60^(@)` with vertical is. (Take `g = 10 m//s^(2)`)

A

`sqrt((3gl)/(5))`

B

`sqrt((gl)/(5))`

C

`sqrt((5gl)/(4))`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
`v cos theta = u sin theta`
`v = sqrt(3)u`…….(i)
`mg l costheta = "mu"^(2) + v`……(ii)

`u = sqrt((gl)/(5)),v=sqrt((3gl)/(5))`
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