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Introductory Physics Homework Help
What is the final angular velocity of the system after the collision?
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[QUOTE="hidemi, post: 6467371, member: 686975"] [B]Homework Statement:[/B] A particle of mass m = 0.10 kg and speed v0 = 5.0 m/s collides and sticks to the end of a uniform solid cylinder of mass M = 1.0 kg and radius R = 20 cm. If the cylinder is initially at rest and is pivoted about a frictionless axle through its center, what is the final angular velocity (in rad/s) of the system after the collision? (A) 8.1 (B) 2.0 (C) 6.1 (D) 4.2 (E) 10 [B]Relevant Equations:[/B] Li = Lf = Iω I calculated as attached and got it right. However, I just wonder why we can't use conservation of energy as the question has already specified 'frictionless', meaning no energy loss and energy distributed to the rotation only. [/QUOTE]
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Introductory Physics Homework Help
What is the final angular velocity of the system after the collision?
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