In one day, a 75-kg mountain climber ascends from the 1500-m level

on a vertical cli� to the top at 2400 m. The next day, she descends
from the top to the base of the cli�, which is at an elevation of 1350 m.
What is her change in gravitational potential energy (a) on the �first
day and (b) on the second day.

1 answer

GPE=mass*g*changeinheight