Potential energy is the energy an object has due to its position or state. As the hiker climbs from 1600m to 3100m, their potential energy increases because they are moving to a higher position in Earth's gravitational field.
Yes, the change in potential energy does affect the work done by the hiker. Work is defined as force applied over a distance, and as the hiker climbs, they are exerting a force against gravity to increase their potential energy. This work is equal to the change in potential energy.
The hiker's experience of exerting effort and feeling tired as they climb can be explained by the change in potential energy. As they move to a higher position, their potential energy increases and their body must do work against gravity, resulting in fatigue.
No, there are other types of energy that may also change for the hiker. Kinetic energy, or the energy of motion, may also change as the hiker moves up the mountain. The hiker's body may also produce heat energy as they exert themselves during the climb.
Yes, potential energy can be converted into other forms of energy. When the hiker reaches the top of the mountain, their potential energy can be converted into kinetic energy as they begin to descend. This energy can also be converted into heat energy through friction as they walk or slide down the mountain.