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a fireman of mass 80 kg slides down a pole. for the steps and strategies involved in solving a similar problem, you may view a video tutor solution. part a when he reaches the bottom, 4.2 m below his starting point, his speed is 2.2 m/s . by how much has thermal energy increased during his slide? express your answer in joules.

Sagot :

Answer: The thermal energy increased during his slide is 3099 J.

Reason:

When the Fireman slides down this initial gravitational potential energy is converted into kinetic energy If we release the mass, gravitational force will do an amount of work equal to mgh on it, thereby increasing its kinetic energy by that same amount.

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