There are two identical square metallic plates kept on a rough horizontal floor at t=0, plates are given angular velocity omega and it is given that plate 1 is rotating about its centre A and plate 2 is rotating about one of its centre O. If t_(1) and t_(2) are the time taken by both the plates to come to rest then (t_(1))/(t_(2)) is (Both are independent cases)

There are two identical square metallic plates kept on a rough horizon

1.	There are two identical square metallic plates kept on a rough horizontal floor at t=0, plates are given angular velocity omega and it is given that plate 1 is rotating about its centre A and plate 2 is rotating about one of its centre O. If t_(1) and t_(2) are the time taken by both the plates to come to rest then (t_(1))/(t_(2)) is (Both are independent cases)
Answer» `(1)/(2)` `2` `(1)/(4)` `4` Solution :`tau ALPHA mgd` `I.((DW)/(dt)) alpha mgd` and `I=K.md^(2)` THEREFORE `(dw)/(dt) alpha (1)/(d)`(Angular Acceleration of plate is independent of mass) Now apply superposition principal

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