A ceiling fan is mounted so that its hub remains fixed at a single point in an…
PHYSICS · Multi-part · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
A ceiling fan is mounted so that its hub remains fixed at a single point in an inertial reference frame. While operating, the fan blades spin rapidly even though the center of mass of the entire fan assembly does not translate.
Answer the questions that follow in coherent, well-reasoned paragraphs.
(a) Explain why the system possesses kinetic energy even though its center of mass is stationary.
(b) Compare the fan’s kinetic-energy distribution with the kinetic energy of an identical fan that slides across a floor without rotating.
(c) If a fan both slides across the floor and spins, describe qualitatively how you would evaluate its total kinetic energy, identifying any information you would need to obtain.