Potential Energy

Elevation and potential energy

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When a body of mass is elevated against the gravitational force the potential energy can be expressed as

E_p = F_g dh

= m g dh (1)

where

F_g = gravitational force acting on the body (N)

E_p = potential energy (J)

m = mass of body (kg)

g = gravitational acceleration (9.81 m/s²)

dh = change in elevation (m)

Example - Potential Energy when body is elevated

A body of 1000 kg is elevated 10 m. The change in potential energy can be calculated as

E_p = 1000 (kg) 9.81 (m/s²) 10 (m)

= 98100 J = 98 kJ = 0.027 kWh

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Related Topics

Mechanics Kinematics, forces, vectors, motion, momentum, energy and the dynamics of objects

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Heat, Work and Energy A brief tutorial to heat, work and energy. Including essentials as specific heat and specific heat capacity
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Energy Energy is the capacity to do work

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