Mechanical energy

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An example o a mechanical seestem: A satellite is orbitin the Yird anly influenced bi the conservative gravitational force an the mechanical energy is tharefore conserved. The satellite is acceleratit towards the Yird wi an acceleration perpendicular tae the velocity. This acceleration is representit bi a green acceleration vector an the velocity is representit bi a reid velocity vector. Thou the velocity is constantly chynged wi the direction o the vector acause o the acceleration vector, the speed o the satellite is nae syne the magnitude o the velocity vector remains unchynged.

In the pheesical sciences, mechanical energy is the sum o potential energy an kinetic energy.