- #1
kthejohnster
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Homework Statement
How much mechanical energy is needed for avg size person to climb climb up nine flights of stairs?
Homework Equations
E=KE+PE
PE=mgh
KE=1/2mv^2
The Attempt at a Solution
person is about 80kg
g=9.8ms^-2
h is about 3 meters per floor for 10 floors = 30m
so at top, when the person stops climbing there is only PE so E=0+80*9.8*30=23520J
isn't this only like 4 kcals? doesn't that seem low?
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