4 A small disc of mass m on an inclined plane of inclination

Last updated: 6/2/2023

4 A small disc of mass m on an inclined plane of inclination with the horizontal is connected to a nail driven into the plane with the help of a light inextensible cord of length 1 Coefficient of friction between the plane and the disc is tane The disc is given such a horizontal velocity at the lowest position that it moves on a complete circular path around the nail without wrapping the cord on the nail a Where is the disc when tensile force in the cord becomes minimum b How much minimum velocity should be given to the disk at the lowest position to round a complete circle