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beigecrow871Lv1
11 Dec 2019
Disk A, with a mass of 2.0 kg and a radius of 70 cm, rotates clockwise about a frictionless vertical axle at 50 rev/s. Disk B, also 2.0 kg but with a radius of 60 cm, rotates counterclockwise about the same axle, but at a greater height than disk A, at 50 rev/s. Disk B slides down the axle until it lands on top of disk A, after which they rotate together. After the collision, what is their common angular speed (in rev/s) and in which direction do they rotate?
Disk A, with a mass of 2.0 kg and a radius of 70 cm, rotates clockwise about a frictionless vertical axle at 50 rev/s. Disk B, also 2.0 kg but with a radius of 60 cm, rotates counterclockwise about the same axle, but at a greater height than disk A, at 50 rev/s. Disk B slides down the axle until it lands on top of disk A, after which they rotate together. After the collision, what is their common angular speed (in rev/s) and in which direction do they rotate?
Supratim PalLv10
25 Sep 2020
