Question

the experimenter from the video rotates on his stool, this time holding his empty hands in his lap. you stand on a desk above him and drop a long, heavy bean bag straight down so that it lands across his lap, in his hands. what happens? view available hint(s) he spins slower. he continues spinning at the same speed. its not possible to predict what will happen. he spins faster. submit provide feedback next

Explanation:

According to the law of conservation of angular momentum ($L = I\omega$, where $L$ is angular momentum, $I$ is moment of inertia, and $\omega$ is angular velocity). When the bean - bag is dropped onto the experimenter, the moment of inertia $I$ of the system (experimenter + bean - bag) increases. Since there is no external torque acting on the system, the angular momentum $L$ is conserved. As $L$ is constant and $I$ increases, the angular velocity $\omega$ must decrease. So the experimenter spins slower.

Answer:

He spins slower.