Physics, 02.10.2021 22:10, winnie45

an engineer places a small sample of a material on a horizontal disk whose surface is made of another material and then rotates the disk from rest with a constant angular acceleration of 4 rad/s2. assuming that the coefficient of static friction between the sample and disk is 0.2, what is the angular velocity of the disk at the time instant when the sample starts slipping on the disk?

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an engineer places a small sample of a material on a horizontal disk whose surface is made of anothe...