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

44027.28 Joules

Step-by-step explanation:

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

`Potential Energy = m* g* 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* 9.81m/s^(2)*74.8m`

Thus
`Potential Energy= 44027.28Joules`

`Potential Energy= 44.027Kilo-joules`