A turntable has a moment of inertia of 3.00 × 10−² kg·m² and spins freely on a frictionless bearing at 25.0 rev/min.A 0.600-kg ball of putty is dropped vertically on the turntable and sticks at a point 0.100 m from the center.By what factor does the angular momentum of the system change after the putty is dropped onto the turntable? A)1.22 B)1.00 (no change) C)0.820 D)1.20

Question

Quizplus · Accepted Answer

The angular momentum of the system is conserved because there is no external torque acting on the system. Therefore, the angular momentum before and after the ball is dropped onto the turntable is the same. So, the factor by which the angular momentum changes is 1 (no change).

A Turntable Has a Moment of Inertia of 3