Question

Does a not spinning fan have energy?

Answer 1

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A fan always uses mechanical energy, that's why, when you turn it off, it eventually stops spinning, and it would even if it were frictionless, because the built up mechanical energy (rotational kinetic energy) gets used up from continuing to move air.

Answer 2

Yes, A nonspinning fan has potential energy.

• There are two forms of energy. Potential energy and kinetic energy.

• An object having energy because of its shape or position or configuration is known as potential energy whereas kinetic energy is possessed by a moving object.
• Hence, when the fan is switched off i.e it is not spinning, it possesses potential energy.