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QUESTION
A uniform circular disk of mass m = 1 kg and radius R = 0:4m rolls down an incline. Suppose the disk starts rolling from rest.
A uniform circular disk of mass m = 1 kg and radius R = 0:4m rolls down an incline. Suppose the disk starts rolling from rest. Find the speed of the center‐of‐mass when the disk is 2m down the inclined plane.
Solution: By conservation of energy: Here,Angular velocity for pure rolling,Moment of inertia of the disk,So, the equation becomes,