A64.0-kg hiker is descending a mountain that has a peak altitude of 2350 m above sea level. the hiker has a device that measures her potential energy, and when she is at the peak of the mountain she decides to "zero" it (that is, she sets the zero point of potential energy to be the mountaintop). what does her potential energy device read sometime later on her descent when she is 1960 m above sea level

U=244608J

Explanation:

The equation of gravitational potential energy is U=mg(h-h_0), where h_0 can be any reference we choose. In this case, the reference is set at an altitude of 2350m, so any gravitational potential energy above this point will be positive and below it will be negative.

For our values then we have:

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