Question

The lowest point in Death Valley is 75.5 m below the sea level. The summit of nearby Mt. Whitney has an elevation of 4360 m. What is the change in potential energy of an energetic 63 kg hiker who makes it from the floor of Death Valley to the top of Mt. Whitney?

Answer 1

Answer:2738.477 kJ

Explanation:

Given

Lowest Point of death valley is 75.5 m below sea level

Height of Mt. Whitney is 4360 m

mass of hiker =63 kg

Change in potential energy$=m\times g\times (h_2-h_1)$

Considering sea level a datum

$\delta PE=63\times 9.8\times (4360-(-75.5))=2738477.7 J$

$\delta PE=2738.477 kJ$