Question

A 60-kg person walks from the ground to the roof of a 74.8 m tall building. How much potential energy does she have at the top of the building?

Answer 1

Answer:

44027.28 Joules

Explanation:

We know that Potential Energy of a body of mass 'm'  is given by

$Potential Energy = m\times g\times h$

where

g= acceleration due to gravity with value = 9.81$m/s^{2}$

h = height above the ground level

Applying given values in the formula we get

$Potential Energy = 60kg\times 9.81m/s^{2}\times74.8m$

Thus $Potential Energy= 44027.28Joules$

$Potential Energy= 44.027Kilo-joules$