The head of a nail becomes hot when it is hammered into a plank of wood.
What energy transformation takes place in this case?
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When the head of a nail is struck with a hammer, the mechanical energy of the hammer pushes the nail into the plank of wood and in this process a part of energy is converted into heat energy
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The potential energy of the hammer is transferred to the nail. A major part of this energy is changed into kinetic energy as the nail moves into the plank and the rest is converted into heat. It si due to this heat that the nail becomes warm
:)
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