A 65.0-kg firefighter climbs a flight of stairs 20.0 m

Chapter 17, Problem 2P

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QUESTION:

Problem 2P

A 65.0-kg firefighter climbs a flight of stairs 20.0 m high. How much work is required?

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QUESTION:

Problem 2P

A 65.0-kg firefighter climbs a flight of stairs 20.0 m high. How much work is required?

ANSWER:

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Work energy theorem

The total work done on a particle equals the change in its kinetic energy. In other words, to change the kinetic energy of a particle we have to apply a force on it and the force must do work on it. In the same if the velocity of the body is considered as the negligible during the climbs on the stairs then we can say that the work done is equal to the gain in potential energy.

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