Write down the energy conversions happening in an analog clock.
Answers
Answer:
The springs in the clock store potential energy. Potential energy from one spring travels down the gear train to the escapement. The escapement converts a small amount of potential energy into kinetic energy that accelerates the escapement flywheel. The kinetic energy in this wheel is converted into potential energy in the hairspring. The wheel stops turning, then the potential energy in the hairspring accelerates the flywheel in the opposite direction. The escapement adds a small amount kinetic energy to the flywheel each time it passes through the midpoint of swing back and forth. The flywheel loses a small amount of kinetic energy as heat due to friction in the bearings and by displacing the air as it turns. When the alarm sounds, the potential energy in its spring goes down a second gear train to form kinetic energy in the hammer. The hammer hits the bell. The surface of the bell gains kinetic energy transferred from the hammer at the point of impact. The bell distorts and the energy converts to potential energy in the distortion of the bell. As with the flywheel, the potential energy converts back to kinetic energy as the bell returns to its original shape, and then back to potential energy as the bell distorts in the opposite direction. The energy gets absorbed by the surrounding air as alternate transitions in kinetic and potential energy in the air as the sound propagates from the bell.
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