Calculate the total potential energy, in Btu, of an object

Marla Payton 2021-12-16 Answered
Calculate the total potential energy, in Btu, of an object that is 20 ft below a datum level at a location where g=31.7fts2 and which has a mass of 100 lbm.
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Expert Answer

habbocowji
Answered 2021-12-17 Author has 22 answers
Step 1
The total potential energy simply is:
PE=mgz
=100×31.7×20×125037Btu
=2.53Btu

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trisanualb6
Answered 2021-12-18 Author has 32 answers

Step 1
Given:
The mass is m=100lbm
The gravitational acceleration is g=31.7 fts2
The height below the datum level is h=20ft
Step 2
The expression of the total potential energy change is given by,
1) U=m×g×h
Here, U is the total potential energy change, m is the mass, g is the gravitational acceleration, and h is the height below the datum level.
Substitute the known values in the equation (1).
U=100lbm×31.7ft/s2×20ft
U=63400ft2×lbms2×0.000039948089Btu1ft2×lbms2
U=2.53255Btu
Therefore, the total potential energy change is -2.53225 Btu.

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