conservation of mechanical energy
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Mechanical energy is the sum of the potential and kinetic energies in a system. The principle of the conservation of mechanical energy states that the total mechanical energy in a system (i.e., the sum of the potential plus kinetic energies) remains constant as long as the only forces acting are conservative forces.
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Work done. Work done by non
by conservative. + conservative force
force
Work done by change in
+. external force. = mechanical
energy
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