A Turntable Has a Moment of Inertia of 3

question 23

Multiple Choice

A turntable has a moment of inertia of 3.0 *10^-2 kg·m² and spins freely on a frictionless bearing at 25 rev/min. A 0.60-kg ball of putty is dropped vertically on the turntable and sticks at a point 0.10 m from the center. By what factor does the kinetic energy of the system change after the putty is dropped onto the turntable?

• A) 0.91
• B) 1.0
• C) 0.83
• D) 1.5

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