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The figure shows a rod which startsm rot...

The figure shows a rod which startsm rotating with angular acceleration `alpha` about vertical axis passing through one of its end (A) in horizontal plane. A bead of mass `m` just fit's the rod and is situated at a distance 'r' from end A. Friction exists between rod and the bead with coefficient `mu`. As the angular velocity of rod increases the bead starts sliding over the rod (say after time `t_(0)`)

Based on above information answer the following question :
Friction force acting on bead at time `t( lt t_(0))` is given by :

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The figure shows a rod which startsm rotating with angular acceleration alpha about vertical axis passing through one of its end (A) in horizontal plane. A bead of mass m just fit's the rod and is situated at a distance 'r' from end A. Friction exists between rod and the bead with coefficient mu . As the angular velocity of rod increases the bead starts sliding over the rod (say after time t_(0) ) Based on above information answer the following question : The normal force acting on bead at time t (lt t_(0)) is :

The figure shows a rod which startsm rotating with angular acceleration alpha about vertical axis passing through one of its end (A) in horizontal plane. A bead of mass m just fit's the rod and is situated at a distance 'r' from end A. Friction exists between rod and the bead with coefficient mu . As the angular velocity of rod increases the bead starts sliding over the rod (say after time t_(0) ) Based on above information answer the following question : If the bead start sliding at t=t_(0) then value of t_(0) is given by :

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