What do you understand by the conservation of mechanical energy? State the condition under which the mechanical energy is conserved.

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What do you understand by the conservation of mechanical energy? State the condition under which the mechanical energy is conserved.

Class 10 | ICSE | Physics | Selina | Work Energy

What do you understand by the conservation of mechanical energy? State the condition under which the mechanical energy is conserved.

When there is no frictional forces,

the law of conservation of mechanical energy asserts that anytime potential and kinetic energy are exchanged, the total mechanical energy remains constant,

i.e. K + U = constant.

Only when there are no frictional forces in a system is mechanical energy conserved,

i.e. between the body and the air.

As a result, mechanical energy conservation is strictly applicable only in vacuum, when air friction is nonexistent.

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