A Particle is attached to the lower end ...

A Particle is attached to the lower end of a uniform rod which is hinged at its other end as shown in the figure. The minimum speed given to the particle so that the rod performs circular motion in a verticle plane will be [length of the rod is l, consider masses of bopth rod and particle to be same]

`sqrt(5gl)`

`sqrt(4gl)`

`sqrt(4.5gl)`

`sqrt(2.25gl)`

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