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Sahay Sir > Question Answers > MTG NEET Physics > Part 1 > Chapter 9 - Rotation > The spool shown in the figure is placed on a rough horizontal surface and has inner radius `r` and outer radius `R`. The angle `theta` between the applied force and the horizontal can be varied. The critical angle `theta` for which the spool does not roll and remains stationary is given by

The spool shown in the figure is placed on a rough horizontal surface and has inner radius `r` and outer radius `R`. The angle `theta` between the applied force and the horizontal can be varied. The critical angle `theta` for which the spool does not roll and remains stationary is given by

1) is: A force of -F k acts on O the origin of the coordinate system. The torque about the point (1